Greenwich sidereal date

'Greenwich sidereal date' can also refer to...


More Like This

Show all results sharing this subject:

  • Astronomy and Astrophysics


Show Summary Details

Quick Reference

The number of sidereal days that have elapsed at Greenwich since a given starting date. It is analogous to Julian Date, and the initial epoch is chosen as the beginning of the sidereal day that was in progress at JD 0.0. The whole-number part of the Greenwich sidereal date is the number of sidereal days that have elapsed since that time (the Greenwich Sidereal Day Number), and the decimal part is the Greenwich Sidereal Time expressed as a fraction of a sidereal day.

Subjects: Astronomy and Astrophysics.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.