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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.| 9900 Hipparchic Cycles | to common time units |
|---|---|
| 9900 HC | = 94974897600000 seconds (s) |
| 9900 HC | = 1582914960000 minutes (min) |
| 9900 HC | = 26381916000 hours (hr) |
| 9900 HC | = 1099246500 days (day) |
| 9900 HC | = 157035214.28571 weeks (wk) |
| 9900 HC | = 3011634.2465753 years (yr) |
| 9900 HC | = 36139610.958904 months (mo) |
| 9900 HC | = 301125.23018389 decades (dec) |
| 9900 HC | = 30112.523018389 centuries (cent) |
| 9900 HC | = 3011.2523018389 millenniums (mill) |