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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+
In relation to the base unit of [time] => (seconds), 1 Sidereal Years (Sy) is equal to 31558149.504 seconds, while 1 Hours (hr) = 3600 seconds.| 305000000 Sidereal Years | to common time units |
|---|---|
| 305000000 Sy | = 9.62523559872E+15 seconds (s) |
| 305000000 Sy | = 1.60420593312E+14 minutes (min) |
| 305000000 Sy | = 2673676555200 hours (hr) |
| 305000000 Sy | = 111403189800 days (day) |
| 305000000 Sy | = 15914741400 weeks (wk) |
| 305000000 Sy | = 305214218.63014 years (yr) |
| 305000000 Sy | = 3662570623.5616 months (mo) |
| 305000000 Sy | = 30517551.042232 decades (dec) |
| 305000000 Sy | = 3051755.1042232 centuries (cent) |
| 305000000 Sy | = 305175.51042232 millenniums (mill) |