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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.| 490600 Hipparchic Cycles | to common time units |
|---|---|
| 490600 HC | = 4706533814400000 seconds (s) |
| 490600 HC | = 78442230240000 minutes (min) |
| 490600 HC | = 1307370504000 hours (hr) |
| 490600 HC | = 54473771000 days (day) |
| 490600 HC | = 7781967285.7143 weeks (wk) |
| 490600 HC | = 149243208.21918 years (yr) |
| 490600 HC | = 1790918498.6301 months (mo) |
| 490600 HC | = 14922428.073557 decades (dec) |
| 490600 HC | = 1492242.8073557 centuries (cent) |
| 490600 HC | = 149224.28073557 millenniums (mill) |