All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class JObserve.TimeConvert

java.lang.Object
   |
   +----JObserve.TimeConvert

public class TimeConvert

extends Object

Time representation. Time is represented in a number of different ways.

• Numeric. Double precision float seconds since from 0h UT, 1858.11.17, (JD 2,400,000.5).
• Time/Date String: 'yyyy.mm.dd hh:mm:ss.ssssss'
• Decimal time: String 'yyyymmddhhmmss.ssssss'
• DecimalTimeOfDay: String 'hhmmss.ssssss'

CenturyMJD

ConstantDays

ConstantSecondsB1900

ConstantSecondsJ2000

DAY_OFFSET

DaysIn100Years

DaysIn1Year

DaysIn400Years

DaysIn4Years

DaysPerHour

DaysPerMinute

DaysPerSecond

DaysToMonth

EndOfRange

HoursPerDay

HoursPerMinute

HoursPerSecond

JulianCenturyDays

MinutesPerDay

MinutesPerHour

MinutesPerSecond

MJD0

Fundamental epochs.

MJDB

MJDJ

MJDOffset

MJDX

SecondsPerDay

SecondsPerHour

SecondsPerMinute

SiderealPerSolar

Some constants extracted from the Astronomical Almanac and other sources.

SolarPerSidereal

TropicalCenturyDays

TimeConvert()

DecimalTime(double)

Convert numeric time value to decimal time string

DecimalTimeOfDay(double)

Convert numeric time value to Decimal Time of Day String

DecimalTimeOfDayToValue(String)

Convert decimal time of day string to numeric time value

DecimalTimeToValue(String)

Convert decimal time string to numeric time value

JulianToSidereal(double)

Convert Julian to Sidereal Time (GST).

JulianToSiderealDay(double)

Convert Julian to Sidereal Day.

SiderealToJulian(double)

Convert Sidereal to Julian Time.

SiderealToJulianDay(double)

Convert Sidereal to Julian Day.

TimeString(double)

Convert numeric time value to Time String

TimeStringToValue(String)

Convert Time String to numeric time value

 public static final double HoursPerDay

 public static final double MinutesPerDay

 public static final double SecondsPerDay

 public static final double MinutesPerHour

 public static final double SecondsPerHour

 public static final double SecondsPerMinute

 public static final double DaysPerHour

 public static final double DaysPerMinute

 public static final double DaysPerSecond

 public static final double HoursPerMinute

 public static final double HoursPerSecond

 public static final double MinutesPerSecond

 public static final double SiderealPerSolar

Some constants extracted from the Astronomical Almanac and other sources.

 public static final double SolarPerSidereal

 public static final double MJDOffset

 public static final double MJD0

Fundamental epochs.

 public static final double MJDB

 public static final double MJDX

 public static final double MJDJ

 public static final double TropicalCenturyDays

 public static final double JulianCenturyDays

 public static final long DAY_OFFSET

 public static final long CenturyMJD[]

 public static final int DaysToMonth[][]

 public static final long DaysIn400Years

 public static final long DaysIn100Years

 public static final long DaysIn4Years

 public static final long DaysIn1Year

 public static final long EndOfRange

 public static final double ConstantDays

 public static final double ConstantSecondsB1900

 public static final double ConstantSecondsJ2000

 public TimeConvert()

 public static String TimeString(double TimeValueParameter)

Convert numeric time value to Time String

Parameters:

double - Numeric time, (seconds since 0h UT, 1858.11.17).

Returns:

String Time String ('yyyy.mm.dd hh:mm:ss.ssssss')

 public static double TimeStringToValue(String TS)

Convert Time String to numeric time value

Parameters:

String - Time String ('yyyy.mm.dd hh:mm:ss.ssssss')

Returns:

double Numeric time, (seconds since 0h UT, 1858.11.17).

 public static String DecimalTime(double TimeValueParameter)

Convert numeric time value to decimal time string

Parameters:

double - Numeric time, (seconds since 0h UT, 1858.11.17).

Returns:

String Decimal Time String ('yyyymmddhhmmss.ssssss')

 public static double DecimalTimeToValue(String FullDecimalTime)

Convert decimal time string to numeric time value

Parameters:

String - Decimal Time String ('yyyymmddhhmmss.ssssss')

Returns:

double Numeric time, (seconds since 0h UT, 1858.11.17).

 public static String DecimalTimeOfDay(double TimeValueParameter)

Convert numeric time value to Decimal Time of Day String

Parameters:

double - Numeric time, (seconds since beginning of day).

Returns:

String Decimal time of day String ('hhmmss.ssssss')

 public static double DecimalTimeOfDayToValue(String DecimalTime)

Convert decimal time of day string to numeric time value

Parameters:

StringDecimal - Time of Day String ('hhmmss.ssssss')

Returns:

doubleNumeric time, (seconds since beginning of day)

 public static double JulianToSiderealDay(double JulianDay)

Convert Julian to Sidereal Day. From the explanatory supplement:
Greenwich sideral date = +0.671 + 1.00273 79093 * Julian date
GSD = 0.671 + SiderealPerSolar*(MJD+2400000.5) - 2400000.5
GSD = 0.671 + 2406571.484 - 2400000.5 + SiderealPerSolar*MJD
GSD = 6571.655 + SiderealPerSolar*MJD

Parameters:

double - Julian Day

Returns:

double Sidereal Day

 public static double SiderealToJulianDay(double SiderealDay)

Convert Sidereal to Julian Day. From the explanatory supplement:
Julian date = -0.669 + 0.99726 95664 * Greenwich sideral date

Parameters:

double - Sidereal Day

Returns:

double Julian Day

 public static double SiderealToJulian(double SiderealTime)

Convert Sidereal to Julian Time.

Parameters:

double - Sidereal Time (GST)

Returns:

double Julian Time

 public static double JulianToSidereal(double JulianTime)

Convert Julian to Sidereal Time (GST).

Parameters:

double - Julian Time

Returns:

double Sidereal Time (GST)

All Packages  Class Hierarchy  This Package  Previous  Next  Index