What does HA stand for?
What does HA mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: HA.
We've found a total of 107 definitions for HA:
The Hermitian Arxiv
What does HA mean?
- hour angle, HA(noun)
- (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day