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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.| 1421663050 Hipparchic Cycles | to common time units |
|---|---|
| 1421663050 HC | = 1.3638616423783E+19 seconds (s) |
| 1421663050 HC | = 2.2731027372972E+17 minutes (min) |
| 1421663050 HC | = 3.788504562162E+15 hours (hr) |
| 1421663050 HC | = 1.5785435675675E+14 days (day) |
| 1421663050 HC | = 22550622393821 weeks (wk) |
| 1421663050 HC | = 432477689744.52 years (yr) |
| 1421663050 HC | = 5189732276934.2 months (mo) |
| 1421663050 HC | = 43242284159.11 decades (dec) |
| 1421663050 HC | = 4324228415.911 centuries (cent) |
| 1421663050 HC | = 432422841.5911 millenniums (mill) |