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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 Sidereal Years (Sy) is equal to 31558149.504 seconds, while 1 Galactic Years (gal) = 7.25328E+15 seconds.| 4978019050 Sidereal Years | to common time units |
|---|---|
| 4978019050 Sy | = 1.5709706941366E+17 seconds (s) |
| 4978019050 Sy | = 2.6182844902277E+15 minutes (min) |
| 4978019050 Sy | = 43638074837128 hours (hr) |
| 4978019050 Sy | = 1818253118213.7 days (day) |
| 4978019050 Sy | = 259750445459.09 weeks (wk) |
| 4978019050 Sy | = 4981515392.3662 years (yr) |
| 4978019050 Sy | = 59778184708.394 months (mo) |
| 4978019050 Sy | = 498088362.12321 decades (dec) |
| 4978019050 Sy | = 49808836.212321 centuries (cent) |
| 4978019050 Sy | = 4980883.6212321 millenniums (mill) |