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Apr 16, 2014 at 18:21 vote accept The Wonderer
Apr 1, 2014 at 11:19 comment added Gerald @Py-ser Precession adds a 20 minutes 24.5 seconds difference between sidereal and tropical year: en.wikipedia.org/wiki/Sidereal_year. To make things even more complicated there is also a nutation: en.wikipedia.org/wiki/Nutation
Apr 1, 2014 at 3:22 comment added Py-ser Is this not because of the equinox precession?
Mar 31, 2014 at 14:24 history answered Gerald CC BY-SA 3.0