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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.| 5439108600 Hipparchic Cycles | to common time units |
|---|---|
| 5439108600 HC | = 5.2179674981846E+19 seconds (s) |
| 5439108600 HC | = 8.6966124969744E+17 minutes (min) |
| 5439108600 HC | = 1.4494354161624E+16 hours (hr) |
| 5439108600 HC | = 6.03931423401E+14 days (day) |
| 5439108600 HC | = 86275917628714 weeks (wk) |
| 5439108600 HC | = 1654606639454.8 years (yr) |
| 5439108600 HC | = 19855279673458 months (mo) |
| 5439108600 HC | = 165439679714.16 decades (dec) |
| 5439108600 HC | = 16543967971.416 centuries (cent) |
| 5439108600 HC | = 1654396797.1416 millenniums (mill) |