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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 Galactic Years (gal) is equal to 7.25328E+15 seconds, while 1 Planck Times (tp) = 5.39121E-44 seconds.| 28 Galactic Years | to common time units |
|---|---|
| 28 gal | = 2.0309184E+17 seconds (s) |
| 28 gal | = 3.384864E+15 minutes (min) |
| 28 gal | = 56414400000000 hours (hr) |
| 28 gal | = 2350600000000 days (day) |
| 28 gal | = 335800000000 weeks (wk) |
| 28 gal | = 6440000000 years (yr) |
| 28 gal | = 77280000000 months (mo) |
| 28 gal | = 643918325.93532 decades (dec) |
| 28 gal | = 64391832.593532 centuries (cent) |
| 28 gal | = 6439183.2593532 millenniums (mill) |