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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.400 Sidereal Years | to common time units |
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400 Sy | = 12623259801.6 seconds (s) |
400 Sy | = 210387663.36 minutes (min) |
400 Sy | = 3506461.056 hours (hr) |
400 Sy | = 146102.544 days (day) |
400 Sy | = 20871.792 weeks (wk) |
400 Sy | = 400.28094246575 years (yr) |
400 Sy | = 4803.371309589 months (mo) |
400 Sy | = 40.023017760304 decades (dec) |
400 Sy | = 4.0023017760304 centuries (cent) |
400 Sy | = 0.40023017760304 millenniums (mill) |