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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.
A decade is a period of 10 years. The word is derived from the Ancient Greek: δεκάς (transliteration=dekas), which means a group of ten. Other words for spans of years also c ..more definition+
In relation to the base unit of [time] => (seconds), 1 Galactic Years (gal) is equal to 7.25328E+15 seconds, while 1 Decades (dec) = 315400000 seconds.| 72 Galactic Years | to common time units |
|---|---|
| 72 gal | = 5.2223616E+17 seconds (s) |
| 72 gal | = 8.703936E+15 minutes (min) |
| 72 gal | = 1.450656E+14 hours (hr) |
| 72 gal | = 6044400000000 days (day) |
| 72 gal | = 863485714285.71 weeks (wk) |
| 72 gal | = 16560000000 years (yr) |
| 72 gal | = 198720000000 months (mo) |
| 72 gal | = 1655789980.9765 decades (dec) |
| 72 gal | = 165578998.09765 centuries (cent) |
| 72 gal | = 16557899.809765 millenniums (mill) |