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 Metonic Cycles (mc) = 599616000 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 Metonic Cycles (table conversion) |
|---|---|
| 1 gal | = 12096541.786744 mc |
| 2 gal | = 24193083.573487 mc |
| 3 gal | = 36289625.360231 mc |
| 4 gal | = 48386167.146974 mc |
| 5 gal | = 60482708.933718 mc |
| 6 gal | = 72579250.720461 mc |
| 7 gal | = 84675792.507205 mc |
| 8 gal | = 96772334.293948 mc |
| 9 gal | = 108868876.08069 mc |
| 10 gal | = 120965417.86744 mc |
| 20 gal | = 241930835.73487 mc |
| 30 gal | = 362896253.60231 mc |
| 40 gal | = 483861671.46974 mc |
| 50 gal | = 604827089.33718 mc |
| 60 gal | = 725792507.20461 mc |
| 70 gal | = 846757925.07205 mc |
| 80 gal | = 967723342.93948 mc |
| 90 gal | = 1088688760.8069 mc |
| 100 gal | = 1209654178.6744 mc |
| 200 gal | = 2419308357.3487 mc |
| 300 gal | = 3628962536.0231 mc |
| 400 gal | = 4838616714.6974 mc |
| 500 gal | = 6048270893.3718 mc |
| 600 gal | = 7257925072.0461 mc |
| 700 gal | = 8467579250.7205 mc |
| 800 gal | = 9677233429.3948 mc |
| 900 gal | = 10886887608.069 mc |
| 1000 gal | = 12096541786.744 mc |
| 2000 gal | = 24193083573.487 mc |
| 4000 gal | = 48386167146.974 mc |
| 5000 gal | = 60482708933.718 mc |
| 7500 gal | = 90724063400.576 mc |
| 10000 gal | = 120965417867.44 mc |
| 25000 gal | = 302413544668.59 mc |
| 50000 gal | = 604827089337.18 mc |
| 100000 gal | = 1209654178674.4 mc |
| 1000000 gal | = 12096541786744 mc |
| 1000000000 gal | = 1.2096541786744E+16 mc |