GravityEngine2.TimeUtils Class Reference

Classes
class	MDHMS

Static Public Member Functions
static MDHMS	Days2mdhms (int year, double days)
static double[]	InvJday (double jd)
static string	JDTimeFormattedYD (double jd)
static string	JDTimeFormattedYMDhms (double jd)
	Return the date formated with year month day hour:min sec.
static double	JDtoEpochYearDays (double jd)
static double	JulianDate (int year, int month, int day, double utime)
static double	SecondsToDHMS (double sec)
static string	SecToDHMSString (double sec)
static double	SecToJD (double sec)
static string	WorldTimeFormattedYYDD (double worldTime, GBUnits.Units units, double startTimeJD=0)

Static Public Attributes
static	int
const int	SEC_PER_DAY = 3600 * 24
const int	SEC_PER_HOUR = 3600
const int	SEC_PER_MIN = 60

Member Function Documentation

InvJday()

static double[] GravityEngine2.TimeUtils.InvJday ( double jd )

static

---

                       procedure invjday

this procedure finds the year, month, day, hour, minute and second given the julian date. tu can be ut1, tdt, tdb, etc.

algorithm : set up starting values find leap year - use 1900 because 2000 is a leap year find the elapsed days through the year in a loop call routine to find each individual value

author : david vallado 719-573-2600 1 mar 2001

inputs description range / units jd - julian date days from 4713 bc

outputs : year - year 1900 .. 2100 mon - month 1 .. 12 day - day 1 .. 28,29,30,31 hr - hour 0 .. 23 min - minute 0 .. 59 sec - second 0.0 .. 59.999

locals : days - day of year plus fractional portion of a day days tu - julian centuries from 0 h jan 0, 1900 temp - temporary double values leapyrs - number of leap years from 1900

coupling : days2mdhms - finds month, day, hour, minute and second given days and year

references :

vallado 2007, 208, alg 22, ex 3-13

Parameters

jd

Returns

[year,mon,day,hr,minute,sec]

JDTimeFormattedYMDhms()

static string GravityEngine2.TimeUtils.JDTimeFormattedYMDhms ( double jd )

static

Return the date formated with year month day hour:min sec.

Parameters

jd

Returns

---

The documentation for this class was generated from the following file:

• ge2/GE2/Assets/GravityEngine2/Runtime/Math/TimeUtils.cs