Try solution for Issue 1313

DataExtractionOSM/src/net/osmand/SunriseSunset.java

@@ -171,11 +171,7 @@ package net.osmand;
 *				
 *----------------------------------------------------------------------------*/
 
-// Import required classes and packages
+import java.util.Calendar;
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-import java.text.NumberFormat;
-import java.text.DecimalFormat;
 import java.util.Date;
 import java.util.TimeZone;
 
@@ -218,15 +214,10 @@ public class SunriseSunset
 	private	int		iDay;					// day of date of interest
 	private	int		iCount;					// a simple counter
 	private	int		iSign;					// SUNUP.BAS: S
-	private double	dfHourRise, dfHourSet;	// hour of event: SUNUP.BAS H3
+	private int  	dfHourRise, dfHourSet;	// hour of event: SUNUP.BAS H3
-	private double	dfMinRise, dfMinSet;	// minute of event: SUNUP.BAS M3
+	private int 	dfMinRise, dfMinSet;	// minute of event: SUNUP.BAS M3
 	private	double	dfSinLat, dfCosLat;		// sin and cos of latitude
 	private	double	dfZenith;				// SUNUP.BAS Z: Zenith
-//	private	SimpleDateFormat dfmtDate;		// formatting for date alone
-	private	SimpleDateFormat dfmtDateTime;	// formatting for date and time
-	private	SimpleDateFormat dfmtYear;		// formatting for year
-	private	SimpleDateFormat dfmtMonth;		// formatting for month
-	private	SimpleDateFormat dfmtDay;		// formatting for day
 	// Many variables in SUNUP.BAS have undocumented meanings, 
 	// and so are translated rather directly to avoid confusion:
 	private	double	dfAA1 = 0, dfAA2 = 0;	// SUNUP.BAS A(2)
@@ -245,9 +236,6 @@ public class SunriseSunset
 	private	double	dfT, dfT0, dfTT;		// SUNUP.BAS T, T0, TT
 	private	double	dfV0, dfV1, dfV2;		// SUNUP.BAS V0, V1, V2
 	
-	private TimeZone tz = TimeZone.getTimeZone( "GMT" );
-	private double origTimeZone;
-	
 	
 /******************************************************************************
 *	method:					SunriseSunset
@@ -273,7 +261,6 @@ public class SunriseSunset
 		dfLon 		= dfLonIn;
 		dateInput 	= dateInputIn;
 		dfTimeZone 	= dfTimeZoneIn;
-		origTimeZone= dfTimeZoneIn;
 
 		// Call the method to do the calculations.
 		doCalculations();
@@ -290,26 +277,14 @@ public class SunriseSunset
 *----------------------------------------------------------------------------*/
 	private void doCalculations()
 	{
-		try
+			// Break out day, month, and year from date provided using local time zone.
-		{
+			// (This is necessary for the math algorithms.)
-			// Break out day, month, and year from date provided.
+			Calendar cin = Calendar.getInstance();
-			// (This is necesary for the math algorithms.)
+			cin.setTime(dateInput);
 	
-			dfmtYear  = new SimpleDateFormat( "yyyy" );
+			iYear  = cin.get(Calendar.YEAR); 
-			dfmtYear.setLenient( false );
+			iMonth = cin.get(Calendar.MONTH) + 1; 
-			dfmtYear.setTimeZone( tz );
+			iDay   = cin.get(Calendar.DAY_OF_MONTH); 
-
-			dfmtMonth = new SimpleDateFormat( "M" );
-			dfmtMonth.setLenient( false );
-			dfmtMonth.setTimeZone( tz );
-
-			dfmtDay   = new SimpleDateFormat( "d" );
-			dfmtDay.setLenient( false );
-			dfmtDay.setTimeZone( tz );
-			
-			iYear  = Integer.parseInt(  dfmtYear.format( dateInput ) );
-			iMonth = Integer.parseInt( dfmtMonth.format( dateInput ) );
-			iDay   = Integer.parseInt(   dfmtDay.format( dateInput ) );
 	
 			// Convert time zone hours to decimal days (SUNUP.BAS line 50)
 			dfTimeZone = dfTimeZone / 24.0;
@@ -464,10 +439,10 @@ public class SunriseSunset
 	
 			// Initialize sunrise and sunset times, and other variables
 			// hr and min are set to impossible times to make errors obvious
-			dfHourRise = 99.0;
+			dfHourRise = 99;
-			dfMinRise  = 99.0;
+			dfMinRise  = 99;
-			dfHourSet  = 99.0;
+			dfHourSet  = 99;
-			dfMinSet   = 99.0;
+			dfMinSet   = 99;
 			dfV0 = 0.0;		// initialization implied by absence in SUNUP.BAS
 			dfV2 = 0.0;		// initialization implied by absence in SUNUP.BAS
 	
@@ -571,8 +546,8 @@ public class SunriseSunset
 				// only if sunrise/set occurred this hour.
 				if ( bSunrise )
 				{
-					dfHourRise = Math.floor( dfC0 + tempE + 1.0/120.0 );
+					dfHourRise = (int)( dfC0 + tempE + 1.0/120.0 );
-					dfMinRise  = Math.floor( 
+					dfMinRise  = (int) ( 
 							( dfC0 + tempE + 1.0/120.0 
 									- dfHourRise 
 									)
@@ -582,8 +557,8 @@ public class SunriseSunset
 	
 				if ( bSunset )
 				{
-					dfHourSet  = Math.floor( dfC0 + tempE + 1.0/120.0 );
+					dfHourSet  = (int) ( dfC0 + tempE + 1.0/120.0 );
-					dfMinSet   = Math.floor( 
+					dfMinSet   = (int)( 
 							( dfC0 + tempE + 1.0/120.0
 									- dfHourSet 
 									) 
@@ -608,48 +583,29 @@ public class SunriseSunset
 			}
 	
 			// Load dateSunrise with data
-			dfmtDateTime = new SimpleDateFormat( "d M yyyy HH:mm z" );
-
-			// Timezone signal is reversed in SunriseSunset class
-			String tz_signal = origTimeZone <= 0?"-":"+";
-			double abs_tz = Math.abs(origTimeZone);
-			NumberFormat formatter = new DecimalFormat("00");
-
-			String tz_offset_hours = formatter.format((int)abs_tz);
-			String tz_offset_minutes = formatter.format((int)(60 * (abs_tz - (int)abs_tz)));
 	
 			if( bSunriseToday )
 			{
-				dateSunrise = dfmtDateTime.parse( iDay 
+				Calendar c = Calendar.getInstance();
-										+ " " + iMonth 
+				c.set(Calendar.YEAR, iYear);
-										+ " " + iYear 
+				c.set(Calendar.MONTH, iMonth-1);
-										+ " " + (int)dfHourRise
+				c.set(Calendar.DAY_OF_MONTH, iDay);
-										+ ":" + (int)dfMinRise 
+				c.set(Calendar.HOUR_OF_DAY, dfHourRise);
-										+ " GMT"
+				c.set(Calendar.MINUTE, dfMinRise);
-									    + tz_signal + tz_offset_hours
+				dateSunrise = c.getTime();
-										+":" + tz_offset_minutes );
 			}
 	
 			// Load dateSunset with data
 			if( bSunsetToday )
 			{
-				dateSunset = dfmtDateTime.parse( iDay 
+				Calendar c = Calendar.getInstance();
-										+ " " + iMonth 
+				c.set(Calendar.YEAR, iYear);
-										+ " " + iYear 
+				c.set(Calendar.MONTH, iMonth-1);
-										+ " " + (int)dfHourSet
+				c.set(Calendar.DAY_OF_MONTH, iDay);
-										+ ":" + (int)dfMinSet 
+				c.set(Calendar.HOUR_OF_DAY, dfHourSet);
-										+ " GMT"
+				c.set(Calendar.MINUTE, dfMinSet);
-									    + tz_signal + tz_offset_hours
+				dateSunset = c.getTime();
-										+":" + tz_offset_minutes );
 			}
-		} // end of try
-
-		// Catch errors
-		catch( ParseException e )
-		{
-			e.printStackTrace();
-		} // end of catch
-
 	}
 	
 	
@@ -819,9 +775,9 @@ public class SunriseSunset
 
 		return( bDaytime );
 	}
-
 } // end of class 
 
 /*-----------------------------------------------------------------------------
 *							end of class
 *----------------------------------------------------------------------------*/
+

DataExtractionOSM/src/net/osmand/SunriseSunset.java_EPA-original

@@ -0,0 +1,827 @@
+package net.osmand;
+/******************************************************************************
+*
+*							SunriseSunset.java
+*
+*******************************************************************************
+* 
+* Java Class: SunriseSunset
+* 
+*	This Java class is part of a collection of classes developed for the 
+*	reading and processing of oceanographic and meterological data collected 
+*	since 1970 by environmental buoys and stations.  This dataset is 
+*	maintained by the National Oceanographic Data Center and is publicly 
+*	available.  These Java classes were written for the US Environmental 
+*	Protection Agency's National Exposure Research Laboratory under Contract 
+*	No. GS-10F-0073K with Neptune and Company of Los Alamos, New Mexico.
+* 
+* Purpose:
+* 
+* 	This Java class performs calculations to determine the time of 
+*	sunrise and sunset given lat, long, and date.
+* 
+* Inputs:
+* 
+* 	Latitude, longitude, date/time, and time zone.
+* 
+* Outputs:
+* 
+* 	Local time of sunrise and sunset as calculated by the 
+*	  program.
+*	If no sunrise or no sunset occurs, or if the sun is up all day 
+*	  or down all day, appropriate boolean values are set.
+*	A boolean is provided to identify if the time provided is during the day.
+*
+*	The above values are accessed by the following methods:
+*
+*		Date	getSunrise()	returns date/time of sunrise
+*		Date	getSunset()		returns date/time of sunset
+*		boolean	isSunrise()		returns true if there was a sunrise, else false
+*		boolean	isSunset()		returns true if there was a sunset, else false
+*		boolean	isSunUp()		returns true if sun is up all day, else false
+*		boolean	isSunDown()		returns true if sun is down all day, else false
+*		boolean	isDaytime()		returns true if sun is up at the time 
+*									specified, else false
+* 
+* Required classes from the Java library:
+* 
+* 	java.util.Date
+* 	java.text.SimpleDateFormat
+* 	java.text.ParseException;
+* 	java.math.BigDecimal;
+* 
+* Package of which this class is a member:
+* 
+*	default
+* 
+* Known limitations:
+* 
+*	It is assumed that the data provided are within value ranges
+*	(i.e. latitude between -90 and +90, longitude between 0 and 360,
+*	a valid date, and time zone between -14 and +14.
+* 
+* Compatibility:
+* 
+*	Java 1.1.8
+* 
+* References:
+*	
+*	The mathematical algorithms used in this program are patterned 
+*	after those debveloped by Roger Sinnott in his BASIC program, 
+*	SUNUP.BAS, published in Sky & Telescope magazine:
+*	Sinnott, Roger W. "Sunrise and Sunset: A Challenge"
+*	Sky & Telescope, August, 1994 p.84-85
+* 
+*	The following is a cross-index of variables used in SUNUP.BAS.
+*	A single definition from multiple reuse of variable names in 
+*	SUNUP.BAS was clarified with various definitions in this program.
+*
+*	SUNUP.BAS	this class
+* 
+*	A			dfA
+*	A(2)		dfAA1, dfAA2
+*	A0			dfA0
+*	A2			dfA2
+*	A5			dfA5
+*	AZ			Not used
+*	C			dfCosLat
+*	C0			dfC0
+*	D			iDay
+*	D(2)		dfDD1, dfDD2
+*	D0			dfD0
+*	D1			dfD1
+*	D2			dfD2
+*	D5			dfD5
+*	D7			Not used
+*	DA			dfDA
+*	DD			dfDD
+*	G			bGregorian, dfGG
+*	H			dfTimeZone
+*	H0			dfH0
+*	H1			dfH1
+*	H2			dfH2
+*	H3			dfHourRise, dfHourSet
+*	H7			Not used
+*	J			dfJ
+*	J3			dfJ3
+*	K1			dfK1
+*	L			dfLL
+*	L0			dfL0
+*	L2			dfL2
+*	L5			dfLon
+*	M			iMonth
+*	M3			dfMinRise, dfMinSet
+*	N7			Not used
+*	P			dfP
+*	S			iSign, dfSinLat, dfSS
+*	T			dfT
+*	T0			dfT0
+*	T3			not used
+*	TT			dfTT
+*	U			dfUU
+*	V			dfVV
+*	V0			dfV0
+*	V1			dfV1
+*	V2			dfV2
+*	W			dfWW
+*	Y			iYear
+*	Z			dfZenith
+*	Z0			dfTimeZone
+*	
+*  
+* Author/Company:
+* 
+* 	JDT: John Tauxe, Neptune and Company
+*	JMG: Jo Marie Green
+* 
+* Change log:
+*  
+*	date       ver    by	description of change
+*	_________  _____  ___	______________________________________________
+*	 5 Jan 01  0.006  JDT	Excised from ssapp.java v. 0.005.
+*	11 Jan 01  0.007  JDT	Minor modifications to comments based on 
+*							  material from Sinnott, 1994.
+*	 7 Feb 01  0.008  JDT	Fixed backwards time zone.  The standard is that 
+*							  local time zone is specified in hours EAST of 
+*							  Greenwich, so that EST would be -5, for example.
+*							  For some reason, SUNUP.BAS does this backwards 
+*							  (probably an americocentric perspective) and 
+*							  SunriseSunset adopted that convention.  Oops.
+*							  So the sign in the math is changed.
+*	 7 Feb 01  0.009  JDT	Well, that threw off the azimuth calculation...
+*							  Removed the azimuth calculations.
+*	14 Feb 01  0.010  JDT	Added ability to accept a time (HH:mm) in 
+*							  dateInput, and decide if that time is daytime 
+*							  or nighttime.
+*	27 Feb 01  0.011  JDT	Added accessor methods in place of having public 
+*							  variables to get results. 
+*	28 Feb 01  0.012  JDT	Cleaned up list of imported classes. 
+*	28 Mar 01  1.10   JDT	Final version accompanying deliverable 1b.
+*    4 Apr 01  1.11   JDT	Moved logic supporting .isDaytime into method.
+*							  Moved calculations out of constructor.
+*   01 May 01  1.12   JMG   Added 'GMT' designation and testing lines.
+*   16 May 01  1.13   JDT   Added setLenient( false ) and setTimeZone( tz )
+*                           to dfmtDay, dfmtMonth, and dfmtYear in 
+*							doCalculations.
+*   27 Jun 01  1.14   JDT	Removed reliance on StationConstants (GMT).
+*	13 Aug 01  1.20   JDT	Final version accompanying deliverable 1c.
+*	 6 Sep 01  1.21   JDT	Thorough code and comment review.
+*	21 Sep 01  1.30   JDT	Final version accompanying deliverable 2.
+*	17 Dec 01  1.40   JDT	Version accompanying final deliverable.
+*				
+*----------------------------------------------------------------------------*/
+
+// Import required classes and packages
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.text.NumberFormat;
+import java.text.DecimalFormat;
+import java.util.Date;
+import java.util.TimeZone;
+
+
+/******************************************************************************
+*	class:					SunriseSunset class
+*******************************************************************************
+*
+* 	This Java class performs calculations to determine the time of 
+*	sunrise and sunset given lat, long, and date.
+*
+*	It is assumed that the data provided are within value ranges
+*	(i.e. latitude between -90 and +90, longitude between 0 and 360,
+*	a valid date, and time zone between -14 and +14.
+*  
+*----------------------------------------------------------------------------*/
+public class SunriseSunset
+{
+	
+	// Declare and initialize variables
+	private double	dfLat;					// latitude from user
+	private double	dfLon;					// latitude from user
+	private Date	dateInput;				// date/time from user
+	private double	dfTimeZone;				// time zone from user
+
+	private Date	dateSunrise;			// date and time of sunrise
+	private Date	dateSunset;				// date and time of sunset
+	private boolean	bSunriseToday  = false;	// flag for sunrise on this date
+	private boolean	bSunsetToday   = false;	// flag for sunset on this date
+	private boolean	bSunUpAllDay   = false;	// flag for sun up all day
+	private boolean	bSunDownAllDay = false;	// flag for sun down all day
+	private boolean	bDaytime	   = false;	// flag for daytime, given 
+											// hour and min in dateInput
+	private boolean	bSunrise = false;		// sunrise during hour checked
+	private boolean	bSunset  = false;		// sunset during hour checked
+	private boolean	bGregorian = false;		// flag for Gregorian calendar
+	private int		iJulian;				// Julian day
+	private	int		iYear;					// year of date of interest
+	private	int		iMonth;					// month of date of interest
+	private	int		iDay;					// day of date of interest
+	private	int		iCount;					// a simple counter
+	private	int		iSign;					// SUNUP.BAS: S
+	private double	dfHourRise, dfHourSet;	// hour of event: SUNUP.BAS H3
+	private double	dfMinRise, dfMinSet;	// minute of event: SUNUP.BAS M3
+	private	double	dfSinLat, dfCosLat;		// sin and cos of latitude
+	private	double	dfZenith;				// SUNUP.BAS Z: Zenith
+//	private	SimpleDateFormat dfmtDate;		// formatting for date alone
+	private	SimpleDateFormat dfmtDateTime;	// formatting for date and time
+	private	SimpleDateFormat dfmtYear;		// formatting for year
+	private	SimpleDateFormat dfmtMonth;		// formatting for month
+	private	SimpleDateFormat dfmtDay;		// formatting for day
+	// Many variables in SUNUP.BAS have undocumented meanings, 
+	// and so are translated rather directly to avoid confusion:
+	private	double	dfAA1 = 0, dfAA2 = 0;	// SUNUP.BAS A(2)
+	private	double	dfDD1 = 0, dfDD2 = 0;	// SUNUP.BAS D(2)
+	private	double	dfC0;					// SUNUP.BAS C0
+	private	double	dfK1;					// SUNUP.BAS K1
+	private	double	dfP;					// SUNUP.BAS P
+	private	double	dfJ;					// SUNUP.BAS J
+	private	double	dfJ3;					// SUNUP.BAS J3
+	private	double	dfA;					// SUNUP.BAS A
+	private	double	dfA0, dfA2, dfA5;		// SUNUP.BAS A0, A2, A5
+	private	double	dfD0, dfD1, dfD2, dfD5;	// SUNUP.BAS D0, D1, D2, D5
+	private	double	dfDA, dfDD;				// SUNUP.BAS DA, DD
+	private	double	dfH0, dfH1, dfH2;		// SUNUP.BAS H0, H1, H2
+	private	double	dfL0, dfL2;				// SUNUP.BAS L0, L2
+	private	double	dfT, dfT0, dfTT;		// SUNUP.BAS T, T0, TT
+	private	double	dfV0, dfV1, dfV2;		// SUNUP.BAS V0, V1, V2
+	
+	private TimeZone tz = TimeZone.getTimeZone( "GMT" );
+	private double origTimeZone;
+	
+	
+/******************************************************************************
+*	method:					SunriseSunset
+*******************************************************************************
+*
+*	Constructor for SunriseSunset class.
+* 
+*----------------------------------------------------------------------------*/
+	public SunriseSunset( 
+				  double dfLatIn,				// latitude 
+				  double dfLonIn,				// longitude 
+				  Date	 dateInputIn,			// date
+				  TimeZone tzIn			        // time zone
+				  )
+	{
+		// Calculate internal representation of timezone offset as fraction of hours from GMT
+		// Our calculations consider offsets to the West as positive, so we must invert
+		// the signal of the values provided by the standard library
+		double dfTimeZoneIn = 1.0 * tzIn.getOffset(dateInputIn.getTime()) / 3600000;
+
+		// Copy values supplied as agruments to local variables.
+		dfLat 		= dfLatIn;
+		dfLon 		= dfLonIn;
+		dateInput 	= dateInputIn;
+		dfTimeZone 	= dfTimeZoneIn;
+		origTimeZone= dfTimeZoneIn;
+
+		// Call the method to do the calculations.
+		doCalculations();
+
+	} // end of class constructor
+
+	
+/******************************************************************************
+*	method:					doCalculations
+*******************************************************************************
+*
+*	Method for performing the calculations done in SUNUP.BAS.
+* 
+*----------------------------------------------------------------------------*/
+	private void doCalculations()
+	{
+		try
+		{
+			// Break out day, month, and year from date provided.
+			// (This is necesary for the math algorithms.)
+
+			dfmtYear  = new SimpleDateFormat( "yyyy" );
+			dfmtYear.setLenient( false );
+			dfmtYear.setTimeZone( tz );
+
+			dfmtMonth = new SimpleDateFormat( "M" );
+			dfmtMonth.setLenient( false );
+			dfmtMonth.setTimeZone( tz );
+
+			dfmtDay   = new SimpleDateFormat( "d" );
+			dfmtDay.setLenient( false );
+			dfmtDay.setTimeZone( tz );
+			
+			iYear  = Integer.parseInt(  dfmtYear.format( dateInput ) );
+			iMonth = Integer.parseInt( dfmtMonth.format( dateInput ) );
+			iDay   = Integer.parseInt(   dfmtDay.format( dateInput ) );
+					
+			// Convert time zone hours to decimal days (SUNUP.BAS line 50)
+			dfTimeZone = dfTimeZone / 24.0;
+
+			// NOTE: (7 Feb 2001) Here is a non-standard part of SUNUP.BAS:
+			// It (and this algorithm) assumes that the time zone is 
+			// positive west, instead of the standard negative west.
+			// Classes calling SunriseSunset will be assuming that 
+			// times zones are specified in negative west, so here the 
+			// sign is changed so that the SUNUP algorithm works:
+			dfTimeZone = -dfTimeZone;
+
+			// Convert longitude to fraction (SUNUP.BAS line 50)
+			dfLon = dfLon / 360.0;
+
+			// Convert calendar date to Julian date:
+			// Check to see if it's later than 1583: Gregorian calendar
+			// When declared, bGregorian is initialized to false.
+			// ** Consider making a separate class of this function. **
+			if( iYear >= 1583 ) bGregorian = true;
+			// SUNUP.BAS 1210
+			dfJ = -Math.floor( 7.0		// SUNUP used INT, not floor
+							 * ( Math.floor( 
+										    ( iMonth + 9.0 )
+										    / 12.0
+										   ) + iYear
+							    ) / 4.0
+							 )
+				// add SUNUP.BAS 1240 and 1250 for G = 0
+				+ Math.floor( iMonth * 275.0 / 9.0 )
+				+ iDay
+				+ 1721027.0
+				+ iYear * 367.0;
+				
+			if ( bGregorian )
+			{
+				// SUNUP.BAS 1230
+				if ( ( iMonth - 9.0 ) < 0.0 ) iSign = -1;
+				else iSign = 1;
+				dfA = Math.abs( iMonth - 9.0 );
+				// SUNUP.BAS 1240 and 1250
+				dfJ3 = -Math.floor(
+								  (
+						 Math.floor(
+					 	  Math.floor( iYear 
+									 + (double)iSign 
+									   * Math.floor( dfA / 7.0 )
+								    )
+								    / 100.0
+								   ) + 1.0
+								  ) * 0.75
+								 );
+				// correct dfJ as in SUNUP.BAS 1240 and 1250 for G = 1
+				dfJ = dfJ + dfJ3 + 2.0;
+			}
+			// SUNUP.BAS 1290
+			iJulian = (int)dfJ - 1;
+			
+			// SUNUP.BAS 60 and 70 (see also line 1290)
+			dfT = (double)iJulian - 2451545.0 + 0.5;
+			dfTT = dfT / 36525.0 + 1.0;				// centuries since 1900
+	
+			// Calculate local sidereal time at 0h in zone time
+			// SUNUP.BAS 410 through 460
+			dfT0 = ( dfT * 8640184.813 / 36525.0
+					+ 24110.5
+					+ dfTimeZone * 86636.6
+					+ dfLon * 86400.0
+				  )
+				  / 86400.0;
+			dfT0 = dfT0 - Math.floor( dfT0 );	// NOTE: SUNUP.BAS uses INT()
+			dfT0 = dfT0 * 2.0 * Math.PI;
+			// SUNUP.BAS 90
+			dfT = dfT + dfTimeZone;
+
+			// SUNUP.BAS 110: Get Sun's position
+			for( iCount=0; iCount<=1; iCount++ )	// Loop thru only twice
+			{
+				// Calculate Sun's right ascension and declination
+				//   at the start and end of each day.
+				// SUNUP.BAS 910 - 1160: Fundamental arguments
+				//   from van Flandern and Pulkkinen, 1979
+				
+				// declare local temporary doubles for calculations
+				double	dfGG;						// SUNUP.BAS G
+				double	dfLL;						// SUNUP.BAS L
+				double	dfSS;						// SUNUP.BAS S
+				double	dfUU;						// SUNUP.BAS U
+				double	dfVV;						// SUNUP.BAS V
+				double	dfWW;						// SUNUP.BAS W
+	
+				dfLL = 0.779072 + 0.00273790931 * dfT;
+				dfLL = dfLL - Math.floor( dfLL );
+				dfLL = dfLL * 2.0 * Math.PI;
+	
+				dfGG = 0.993126 + 0.0027377785 * dfT;
+				dfGG = dfGG - Math.floor( dfGG );
+				dfGG = dfGG * 2.0 * Math.PI;
+	
+				dfVV =   0.39785 * Math.sin( dfLL )
+						- 0.01000 * Math.sin( dfLL - dfGG )
+						+ 0.00333 * Math.sin( dfLL + dfGG )
+						- 0.00021 * Math.sin( dfLL ) * dfTT;
+						
+				dfUU = 1
+					    - 0.03349 * Math.cos( dfGG )
+						- 0.00014 * Math.cos( dfLL * 2.0 )
+						+ 0.00008 * Math.cos( dfLL );
+		
+				dfWW = - 0.00010
+						- 0.04129 * Math.sin( dfLL * 2.0 )
+						+ 0.03211 * Math.sin( dfGG )
+						- 0.00104 * Math.sin( 2.0 * dfLL - dfGG )
+						- 0.00035 * Math.sin( 2.0 * dfLL + dfGG )
+						- 0.00008 * Math.sin( dfGG ) * dfTT;
+						
+				// Compute Sun's RA and Dec; SUNUP.BAS 1120 - 1140
+				dfSS = dfWW / Math.sqrt( dfUU - dfVV * dfVV );
+				dfA5 = dfLL 
+					   + Math.atan( dfSS / Math.sqrt( 1.0 - dfSS * dfSS ));
+					
+				dfSS = dfVV / Math.sqrt( dfUU );
+				dfD5 = Math.atan( dfSS / Math.sqrt( 1 - dfSS * dfSS ));					
+					
+				// Set values and increment t
+				if ( iCount == 0 )		// SUNUP.BAS 125
+				{
+					dfAA1 = dfA5;
+					dfDD1 = dfD5;
+				}
+				else					// SUNUP.BAS 145
+				{
+					dfAA2 = dfA5;
+					dfDD2 = dfD5;
+				}
+				dfT = dfT + 1.0;		// SUNUP.BAS 130
+			}	// end of Get Sun's Position for loop
+				
+			if ( dfAA2 < dfAA1 ) dfAA2 = dfAA2 + 2.0 * Math.PI;
+															// SUNUP.BAS 150
+	
+			dfZenith = Math.PI * 90.833 / 180.0;			// SUNUP.BAS 160
+			dfSinLat = Math.sin( dfLat * Math.PI / 180.0 );	// SUNUP.BAS 170
+			dfCosLat = Math.cos( dfLat * Math.PI / 180.0 );	// SUNUP.BAS 170
+				
+			dfA0 = dfAA1;									// SUNUP.BAS 190
+			dfD0 = dfDD1;									// SUNUP.BAS 190
+			dfDA = dfAA2 - dfAA1;							// SUNUP.BAS 200
+			dfDD = dfDD2 - dfDD1;							// SUNUP.BAS 200
+				
+			dfK1 = 15.0 * 1.0027379 * Math.PI / 180.0;		// SUNUP.BAS 330
+	
+			// Initialize sunrise and sunset times, and other variables
+			// hr and min are set to impossible times to make errors obvious
+			dfHourRise = 99.0;
+			dfMinRise  = 99.0;
+			dfHourSet  = 99.0;
+			dfMinSet   = 99.0;
+			dfV0 = 0.0;		// initialization implied by absence in SUNUP.BAS
+			dfV2 = 0.0;		// initialization implied by absence in SUNUP.BAS
+				
+			// Test each hour to see if the Sun crosses the horizon
+			//   and which way it is heading.
+			for( iCount=0; iCount<24; iCount++ )			// SUNUP.BAS 210
+			{
+				double	tempA;								// SUNUP.BAS A
+				double	tempB;								// SUNUP.BAS B
+				double	tempD;								// SUNUP.BAS D
+				double	tempE;								// SUNUP.BAS E
+					
+				dfC0 = (double)iCount;
+				dfP = ( dfC0 + 1.0 ) / 24.0;				// SUNUP.BAS 220
+				dfA2 = dfAA1 + dfP * dfDA;					// SUNUP.BAS 230
+				dfD2 = dfDD1 + dfP * dfDD;					// SUNUP.BAS 230
+				dfL0 = dfT0 + dfC0 * dfK1;					// SUNUP.BAS 500
+				dfL2 = dfL0 + dfK1;							// SUNUP.BAS 500
+				dfH0 = dfL0 - dfA0;							// SUNUP.BAS 510
+				dfH2 = dfL2 - dfA2;							// SUNUP.BAS 510
+				// hour angle at half hour
+				dfH1 = ( dfH2 + dfH0 ) / 2.0;				// SUNUP.BAS 520
+				// declination at half hour
+				dfD1 = ( dfD2 + dfD0 ) / 2.0;				// SUNUP.BAS 530
+					
+				// Set value of dfV0 only if this is the first hour, 
+				// otherwise, it will get set to the last dfV2 (SUNUP.BAS 250)
+				if ( iCount == 0 )							// SUNUP.BAS 550
+				{	
+					dfV0 = dfSinLat * Math.sin( dfD0 )
+						 + dfCosLat * Math.cos( dfD0 ) * Math.cos( dfH0 )
+						 - Math.cos( dfZenith );			// SUNUP.BAS 560
+				}
+				else
+					dfV0 = dfV2;	// That is, dfV2 from the previous hour.
+				
+				dfV2 = dfSinLat * Math.sin( dfD2 )
+						 + dfCosLat * Math.cos( dfD2 ) * Math.cos( dfH2 )
+						 - Math.cos( dfZenith );			// SUNUP.BAS 570
+					
+				// if dfV0 and dfV2 have the same sign, then proceed to next hr
+				if ( 
+					 ( dfV0 >= 0.0 && dfV2 >= 0.0 )		// both are positive
+					 ||								// or
+					 ( dfV0 < 0.0 && dfV2 < 0.0 ) 		// both are negative
+				   )
+				{
+					// Break iteration and proceed to test next hour
+					dfA0 = dfA2;							// SUNUP.BAS 250
+					dfD0 = dfD2;							// SUNUP.BAS 250
+					continue;								// SUNUP.BAS 610
+				}
+					
+				dfV1 = dfSinLat * Math.sin( dfD1 )
+					 + dfCosLat * Math.cos( dfD1 ) * Math.cos( dfH1 )
+					 - Math.cos( dfZenith );				// SUNUP.BAS 590
+	
+				tempA = 2.0 * dfV2 - 4.0 * dfV1 + 2.0 * dfV0;
+															// SUNUP.BAS 600
+				tempB = 4.0 * dfV1 - 3.0 * dfV0 - dfV2;		// SUNUP.BAS 600
+				tempD = tempB * tempB - 4.0 * tempA * dfV0;	// SUNUP.BAS 610
+					
+				if ( tempD < 0.0 ) 
+				{
+					// Break iteration and proceed to test next hour
+					dfA0 = dfA2;							// SUNUP.BAS 250
+					dfD0 = dfD2;							// SUNUP.BAS 250
+					continue;								// SUNUP.BAS 610
+				}
+					
+				tempD = Math.sqrt( tempD );					// SUNUP.BAS 620
+	
+				// Determine occurence of sunrise or sunset.
+					
+				// Flags to identify occurrence during this day are 
+				// bSunriseToday and bSunsetToday, and are initialized false.
+				// These are set true only if sunrise or sunset occurs 
+				// at any point in the hourly loop. Never set to false.
+	
+				// Flags to identify occurrence during this hour:
+				bSunrise = false;				// reset before test
+				bSunset  = false;				// reset before test
+					
+				if ( dfV0 < 0.0 && dfV2 > 0.0 )	// sunrise occurs this hour
+				{
+					bSunrise = true;			// SUNUP.BAS 640
+					bSunriseToday = true;		// sunrise occurred today
+				}
+	
+				if ( dfV0 > 0.0 && dfV2 < 0.0 )	// sunset occurs this hour
+				{
+					bSunset = true;				// SUNUP.BAS 660
+					bSunsetToday = true;		// sunset occurred today
+				}
+					
+				tempE = ( tempD - tempB ) / ( 2.0 * tempA );
+				if ( tempE > 1.0 || tempE < 0.0 )	// SUNUP.BAS 670, 680
+					tempE = ( -tempD - tempB ) / ( 2.0 * tempA );					
+					
+				// Set values of hour and minute of sunset or sunrise
+				// only if sunrise/set occurred this hour.
+				if ( bSunrise )
+				{
+					dfHourRise = Math.floor( dfC0 + tempE + 1.0/120.0 );
+					dfMinRise  = Math.floor( 
+											 ( dfC0 + tempE + 1.0/120.0 
+											    - dfHourRise 
+											 )
+											 * 60.0
+											);
+				}
+	
+				if ( bSunset )
+				{
+					dfHourSet  = Math.floor( dfC0 + tempE + 1.0/120.0 );
+					dfMinSet   = Math.floor( 
+											 ( dfC0 + tempE + 1.0/120.0
+											    - dfHourSet 
+											 ) 
+											 * 60.0
+											);
+				}
+	
+				// Change settings of variables for next loop
+				dfA0 = dfA2;								// SUNUP.BAS 250
+				dfD0 = dfD2;								// SUNUP.BAS 250
+					
+			}	// end of loop testing each hour for an event	
+				
+			// After having checked all hours, set flags if no rise or set
+			// bSunUpAllDay and bSundownAllDay are initialized as false
+			if ( !bSunriseToday && !bSunsetToday )
+			{
+				if ( dfV2 < 0.0 )
+					bSunDownAllDay = true;
+				else
+					bSunUpAllDay = true;
+			}
+	
+			// Load dateSunrise with data
+			dfmtDateTime = new SimpleDateFormat( "d M yyyy HH:mm z" );
+
+			// Timezone signal is reversed in SunriseSunset class
+			String tz_signal = origTimeZone <= 0?"-":"+";
+			double abs_tz = Math.abs(origTimeZone);
+			NumberFormat formatter = new DecimalFormat("00");
+
+			String tz_offset_hours = formatter.format((int)abs_tz);
+			String tz_offset_minutes = formatter.format((int)(60 * (abs_tz - (int)abs_tz)));
+
+			if( bSunriseToday )
+			{
+				dateSunrise = dfmtDateTime.parse( iDay 
+										+ " " + iMonth 
+										+ " " + iYear 
+										+ " " + (int)dfHourRise
+										+ ":" + (int)dfMinRise 
+										+ " GMT"
+									    + tz_signal + tz_offset_hours
+										+":" + tz_offset_minutes );
+			}
+		
+			// Load dateSunset with data
+			if( bSunsetToday )
+			{
+				dateSunset = dfmtDateTime.parse( iDay 
+										+ " " + iMonth 
+										+ " " + iYear 
+										+ " " + (int)dfHourSet
+										+ ":" + (int)dfMinSet 
+										+ " GMT"
+									    + tz_signal + tz_offset_hours
+										+":" + tz_offset_minutes );
+			}
+		} // end of try
+
+		// Catch errors
+		catch( ParseException e )
+		{
+			e.printStackTrace();
+		} // end of catch
+
+	}
+	
+	
+/******************************************************************************
+*	method:					getSunrise()
+*******************************************************************************
+*
+*   Gets the date and time of sunrise.  If there is no sunrise, returns null.
+*				
+*	Member of SunriseSunset class
+*				
+* -------------------------------------------------------------------------- */
+	public Date getSunrise()
+	{
+		if ( bSunriseToday )
+			return( dateSunrise );
+		else
+			return( null );
+	}
+
+	
+/******************************************************************************
+*	method:					getSunset()
+*******************************************************************************
+*
+*   Gets the date and time of sunset.  If there is no sunset, returns null.
+*				
+*	Member of SunriseSunset class
+*				
+* -------------------------------------------------------------------------- */
+	public Date getSunset()
+	{
+		if ( bSunsetToday )
+			return( dateSunset );
+		else
+			return( null );
+	}
+
+	
+/******************************************************************************
+*	method:					isSunrise()
+*******************************************************************************
+*
+*   Returns a boolean identifying if there was a sunrise.
+*				
+*	Member of SunriseSunset class
+*				
+* -------------------------------------------------------------------------- */
+	public boolean isSunrise()
+	{
+		return( bSunriseToday );
+	}
+
+	
+/******************************************************************************
+*	method:					isSunset()
+*******************************************************************************
+*
+*   Returns a boolean identifying if there was a sunset.
+*				
+*	Member of SunriseSunset class
+*				
+* -------------------------------------------------------------------------- */
+	public boolean isSunset()
+	{
+		return( bSunsetToday );
+	}
+
+	
+/******************************************************************************
+*	method:					isSunUp()
+*******************************************************************************
+*
+*   Returns a boolean identifying if the sun is up all day.
+*				
+*	Member of SunriseSunset class
+*				
+* -------------------------------------------------------------------------- */
+	public boolean isSunUp()
+	{
+		return( bSunUpAllDay );
+	}
+
+	
+/******************************************************************************
+*	method:					isSunDown()
+*******************************************************************************
+*
+*   Returns a boolean identifying if the sun is down all day.
+*				
+*	Member of SunriseSunset class
+*				
+* -------------------------------------------------------------------------- */
+	public boolean isSunDown()
+	{
+		return( bSunDownAllDay );
+	}
+
+	
+/******************************************************************************
+*	method:					isDaytime()
+*******************************************************************************
+*
+*   Returns a boolean identifying if it is daytime at the hour contained in 
+*	the Date object passed to SunriseSunset on construction.
+*				
+*	Member of SunriseSunset class
+*				
+* -------------------------------------------------------------------------- */
+	public boolean isDaytime()
+	{
+		// Determine if it is daytime (at sunrise or later) 
+		//	or nighttime (at sunset or later) at the location of interest
+		//	but expressed in the time zone requested.
+		if ( bSunriseToday && bSunsetToday ) 	// sunrise and sunset
+		{
+			if ( dateSunrise.before( dateSunset ) )	// sunrise < sunset
+			{
+				if ( 
+					 (	
+						dateInput.after( dateSunrise ) 
+						||
+						dateInput.equals( dateSunrise ) 
+					 )
+					 &&
+					 dateInput.before( dateSunset )
+				   )
+					bDaytime = true;
+				else
+				bDaytime = false;
+				}
+			else 	// sunrise comes after sunset (in opposite time zones)
+			{
+				if ( 
+					 (	
+						dateInput.after( dateSunrise ) 
+						||
+						dateInput.equals( dateSunrise ) 
+					 )
+					 ||			// use OR rather than AND
+					 dateInput.before( dateSunset )
+				   )
+					bDaytime = true;
+				else
+				bDaytime = false;
+				}
+		}
+		else if ( bSunUpAllDay ) 				// sun is up all day
+			bDaytime = true;
+		else if ( bSunDownAllDay )				// sun is down all day
+			bDaytime = false;
+		else if ( bSunriseToday ) 				// sunrise but no sunset
+		{
+			if ( dateInput.before( dateSunrise ) )
+				bDaytime = false;
+			else
+				bDaytime = true;
+		}
+		else if ( bSunsetToday ) 				// sunset but no sunrise
+		{
+			if ( dateInput.before( dateSunset ) )
+				bDaytime = true;
+			else
+				bDaytime = false;
+		}
+		else bDaytime = false;					// this should never execute
+
+		return( bDaytime );
+	}
+
+} // end of class 
+
+/*-----------------------------------------------------------------------------
+*							end of class
+*----------------------------------------------------------------------------*/

OsmAnd/src/net/osmand/plus/development/OsmandDevelopmentPlugin.java

@@ -1,5 +1,6 @@
 package net.osmand.plus.development;
 
+import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 
 import net.osmand.SunriseSunset;
@@ -130,9 +131,14 @@ public class OsmandDevelopmentPlugin extends OsmandPlugin {
 		pref = new Preference(app);
 		pref.setTitle(R.string.day_night_info);
 		if (sunriseSunset != null) {
-			SimpleDateFormat prt = new SimpleDateFormat("dd.MM.yyyy HH:mm");
+			//SimpleDateFormat prt = new SimpleDateFormat("dd.MM.yyyy HH:mm");
-			pref.setSummary(activity.getString(R.string.day_night_info_description, prt.format(sunriseSunset.getSunrise()),
+			//pref.setSummary(activity.getString(R.string.day_night_info_description, prt.format(sunriseSunset.getSunrise()),
-					prt.format(sunriseSunset.getSunset())));
+			//		prt.format(sunriseSunset.getSunset())));
+			//new approach for previous 3 lines from Issue 1313
+			  DateFormat format = SimpleDateFormat.getDateTimeInstance();
+			  String sunrise = format.format(sunriseSunset.getSunrise());
+			  String sunset = format.format(sunriseSunset.getSunset());
+			  pref.setSummary(activity.getString(R.string.day_night_info_description, sunrise, sunset)); 
 		} else {
 			pref.setSummary(activity.getString(R.string.day_night_info_description, "null",
 					"null"));