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 year is the orbital period of the Earth moving in its orbit around the Sun. In astronomy, the Julian year is a unit of time; it is defined as 365.25 days of exactly 86400 seconds (SI base unit), totalling exactly 31557600 seconds in the Julian astronomical year.
In relation to the base unit of [time] => (seconds), 1 Galactic Years (gal) is equal to 7.25328E+15 seconds, while 1 Years (yr) = 31536000 seconds.| 1 Galactic Years | to common time units |
|---|---|
| 1 gal | = 7.25328E+15 seconds (s) |
| 1 gal | = 1.20888E+14 minutes (min) |
| 1 gal | = 2014800000000 hours (hr) |
| 1 gal | = 83950000000 days (day) |
| 1 gal | = 11992857142.857 weeks (wk) |
| 1 gal | = 230000000 years (yr) |
| 1 gal | = 2760000000 months (mo) |
| 1 gal | = 22997083.069119 decades (dec) |
| 1 gal | = 2299708.3069119 centuries (cent) |
| 1 gal | = 229970.83069119 millenniums (mill) |
| Galactic Years | to Years (table conversion) |
|---|---|
| 1 gal | = 230000000 yr |
| 2 gal | = 460000000 yr |
| 3 gal | = 690000000 yr |
| 4 gal | = 920000000 yr |
| 5 gal | = 1150000000 yr |
| 6 gal | = 1380000000 yr |
| 7 gal | = 1610000000 yr |
| 8 gal | = 1840000000 yr |
| 9 gal | = 2070000000 yr |
| 10 gal | = 2300000000 yr |
| 20 gal | = 4600000000 yr |
| 30 gal | = 6900000000 yr |
| 40 gal | = 9200000000 yr |
| 50 gal | = 11500000000 yr |
| 60 gal | = 13800000000 yr |
| 70 gal | = 16100000000 yr |
| 80 gal | = 18400000000 yr |
| 90 gal | = 20700000000 yr |
| 100 gal | = 23000000000 yr |
| 200 gal | = 46000000000 yr |
| 300 gal | = 69000000000 yr |
| 400 gal | = 92000000000 yr |
| 500 gal | = 115000000000 yr |
| 600 gal | = 138000000000 yr |
| 700 gal | = 161000000000 yr |
| 800 gal | = 184000000000 yr |
| 900 gal | = 207000000000 yr |
| 1000 gal | = 230000000000 yr |
| 2000 gal | = 460000000000 yr |
| 4000 gal | = 920000000000 yr |
| 5000 gal | = 1150000000000 yr |
| 7500 gal | = 1725000000000 yr |
| 10000 gal | = 2300000000000 yr |
| 25000 gal | = 5750000000000 yr |
| 50000 gal | = 11500000000000 yr |
| 100000 gal | = 23000000000000 yr |
| 1000000 gal | = 2.3E+14 yr |
| 1000000000 gal | = 2.3E+17 yr |