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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 Hipparchic Cycles (HC) = 9593424000 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 Hipparchic Cycles (table conversion) |
|---|---|
| 1 gal | = 756067.90651596 HC |
| 2 gal | = 1512135.8130319 HC |
| 3 gal | = 2268203.7195479 HC |
| 4 gal | = 3024271.6260639 HC |
| 5 gal | = 3780339.5325798 HC |
| 6 gal | = 4536407.4390958 HC |
| 7 gal | = 5292475.3456117 HC |
| 8 gal | = 6048543.2521277 HC |
| 9 gal | = 6804611.1586437 HC |
| 10 gal | = 7560679.0651596 HC |
| 20 gal | = 15121358.130319 HC |
| 30 gal | = 22682037.195479 HC |
| 40 gal | = 30242716.260639 HC |
| 50 gal | = 37803395.325798 HC |
| 60 gal | = 45364074.390958 HC |
| 70 gal | = 52924753.456117 HC |
| 80 gal | = 60485432.521277 HC |
| 90 gal | = 68046111.586437 HC |
| 100 gal | = 75606790.651596 HC |
| 200 gal | = 151213581.30319 HC |
| 300 gal | = 226820371.95479 HC |
| 400 gal | = 302427162.60639 HC |
| 500 gal | = 378033953.25798 HC |
| 600 gal | = 453640743.90958 HC |
| 700 gal | = 529247534.56117 HC |
| 800 gal | = 604854325.21277 HC |
| 900 gal | = 680461115.86437 HC |
| 1000 gal | = 756067906.51596 HC |
| 2000 gal | = 1512135813.0319 HC |
| 4000 gal | = 3024271626.0639 HC |
| 5000 gal | = 3780339532.5798 HC |
| 7500 gal | = 5670509298.8697 HC |
| 10000 gal | = 7560679065.1596 HC |
| 25000 gal | = 18901697662.899 HC |
| 50000 gal | = 37803395325.798 HC |
| 100000 gal | = 75606790651.596 HC |
| 1000000 gal | = 756067906515.96 HC |
| 1000000000 gal | = 7.5606790651596E+14 HC |