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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.| 999300 Hipparchic Cycles | to common time units |
|---|---|
| 999300 HC | = 9586708603200000 seconds (s) |
| 999300 HC | = 159778476720000 minutes (min) |
| 999300 HC | = 2662974612000 hours (hr) |
| 999300 HC | = 110957275500 days (day) |
| 999300 HC | = 15851039357.143 weeks (wk) |
| 999300 HC | = 303992535.61644 years (yr) |
| 999300 HC | = 3647910427.3973 months (mo) |
| 999300 HC | = 30395398.234623 decades (dec) |
| 999300 HC | = 3039539.8234623 centuries (cent) |
| 999300 HC | = 303953.98234623 millenniums (mill) |