Talk:0H

0H = equinox

Per recent deletion:

• "If the vernal equinox is at upper culmination, the sidereal time is 0h." James B. Kaler, The Ever-Changing Sky:A Guide to the Celestial Sphere
• "The Serving Trinity begins at the winter solstice, December 21, and ends at the spring meridian, March 21. The Intellectual Trinity begins at the spring meridian, March 21, and ends at the summer solstice, June 21." Hiram Erastus Butler, Solar Biology

Deletion is controversial. Jokestress (talk) 02:06, 3 March 2012 (UTC)

0H = hour angle

• "At the instant of the body's passage over the meridian wire, mark the time by the chronometer. The hour angle at the instant is 0h; therefore the local sidereal time is equal to the right ascension of the body in the case of a star, or the local apparent time is 0h in the case of the sun's center." United States Hydrographic Office (1920). American practical navigator: an epitome of navigation and nautical astronomy

This meaning should be incorporated into hour angle. Jokestress (talk) 02:14, 3 March 2012 (UTC)

[[File:YU SHEAN|thumbnail]ȳŭ — Preceding unsigned comment added by 115.134.89.66 (talk) 12:38, 16 July 2013 (UTC)