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The galactic year, or cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. Estimates of the length of one orbit range from 225 to 250 million terrestrial years.
In relation to the base unit of [time] => (seconds), 1 Hipparchic Cycles (HC) is equal to 9593424000 seconds, while 1 Galactic Years (gal) = 7.25328E+15 seconds.| 422400 Hipparchic Cycles | to common time units |
|---|---|
| 422400 HC | = 4052262297600000 seconds (s) |
| 422400 HC | = 67537704960000 minutes (min) |
| 422400 HC | = 1125628416000 hours (hr) |
| 422400 HC | = 46901184000 days (day) |
| 422400 HC | = 6700169142.8571 weeks (wk) |
| 422400 HC | = 128496394.52055 years (yr) |
| 422400 HC | = 1541956734.2466 months (mo) |
| 422400 HC | = 12848009.821179 decades (dec) |
| 422400 HC | = 1284800.9821179 centuries (cent) |
| 422400 HC | = 128480.09821179 millenniums (mill) |