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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.| 75 Hipparchic Cycles | to common time units |
|---|---|
| 75 HC | = 719506800000 seconds (s) |
| 75 HC | = 11991780000 minutes (min) |
| 75 HC | = 199863000 hours (hr) |
| 75 HC | = 8327625 days (day) |
| 75 HC | = 1189660.7142857 weeks (wk) |
| 75 HC | = 22815.410958904 years (yr) |
| 75 HC | = 273784.93150685 months (mo) |
| 75 HC | = 2281.2517438174 decades (dec) |
| 75 HC | = 228.12517438174 centuries (cent) |
| 75 HC | = 22.812517438174 millenniums (mill) |