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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.| 17 Hipparchic Cycles | to common time units |
|---|---|
| 17 HC | = 163088208000 seconds (s) |
| 17 HC | = 2718136800 minutes (min) |
| 17 HC | = 45302280 hours (hr) |
| 17 HC | = 1887595 days (day) |
| 17 HC | = 269656.42857143 weeks (wk) |
| 17 HC | = 5171.4931506849 years (yr) |
| 17 HC | = 62057.917808219 months (mo) |
| 17 HC | = 517.0837285986 decades (dec) |
| 17 HC | = 51.70837285986 centuries (cent) |
| 17 HC | = 5.170837285986 millenniums (mill) |