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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.| 20 Hipparchic Cycles | to common time units |
|---|---|
| 20 HC | = 191868480000 seconds (s) |
| 20 HC | = 3197808000 minutes (min) |
| 20 HC | = 53296800 hours (hr) |
| 20 HC | = 2220700 days (day) |
| 20 HC | = 317242.85714286 weeks (wk) |
| 20 HC | = 6084.1095890411 years (yr) |
| 20 HC | = 73009.315068493 months (mo) |
| 20 HC | = 608.3337983513 decades (dec) |
| 20 HC | = 60.83337983513 centuries (cent) |
| 20 HC | = 6.083337983513 millenniums (mill) |