JulianDates 4.5.1
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public class JulianDates { public static void main(String[] args) throws PatriusException { // Patrius Dataset initialization (needed for example to get the UTC time) PatriusDataset.addResourcesFromPatriusDataset() ; // Recovery of the UTC time scale using a "factory" (not to duplicate such unique object) final TimeScale TUC = TimeScalesFactory.getUTC(); // Date of the orbit (given in UTC time scale) final AbsoluteDate date = new AbsoluteDate("2010-01-01T12:00:00.000", TUC); // Printing date in TUC and TAI scale (by default) System.out.println(); System.out.println(date.toString(TUC)); System.out.println(date.toString()); final double dateJJ = date.toCNESJulianDate(TUC); System.out.println(); System.out.println(dateJJ); // Other way to initialize the absolute date final AbsoluteDate dateBis = new AbsoluteDate(dateJJ, TUC); System.out.println(); System.out.println("Comparizon between both dates = "+dateBis.compareTo(date) +" s"); } }