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The hour (common symbol: h or hr, h being the international form of the symbol) is a unit of measurement of time. In modern usage, an hour comprises 60 minutes, or 3,600 second ..more definition+
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 Hours (hr) is equal to 3600 seconds, while 1 Galactic Years (gal) = 7.25328E+15 seconds.18 Hours | to common time units |
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18 hr | = 64800 seconds (s) |
18 hr | = 1080 minutes (min) |
18 hr | = 18 hours (hr) |
18 hr | = 0.75 days (day) |
18 hr | = 0.10714285714286 weeks (wk) |
18 hr | = 0.0020547945205479 years (yr) |
18 hr | = 0.024657534246575 months (mo) |
18 hr | = 0.00020545339251744 decades (dec) |
18 hr | = 2.0545339251744E-5 centuries (cent) |
18 hr | = 2.0545339251744E-6 millenniums (mill) |