Fascination About epoch sign in
Epoch compared to equinoxDate-references for coordinate systemsEpochs and durations of validityChanging the conventional equinox and epochSpecifying an epoch or equinoxBesselian yearsJulian yrs and J2000Epoch of your daySee alsoReferencesNotesCitationsSourcesFurther readingExternal one-way linksThe principle use of astronomical portions specified i