The Basic Principles Of epoch sign in
Epoch compared to equinoxDate-references for coordinate systemsEpochs and intervals of validityChanging the conventional equinox and epochSpecifying an epoch or equinoxBesselian yearsJulian decades and J2000Epoch of your daySee alsoReferencesNotesCitationsSourcesFurther readingExternal linksAstronomical quantities could be specified in any of numer