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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.| 199800 Sidereal Years | to common time units |
|---|---|
| 199800 Sy | = 6305318270899.2 seconds (s) |
| 199800 Sy | = 105088637848.32 minutes (min) |
| 199800 Sy | = 1751477297.472 hours (hr) |
| 199800 Sy | = 72978220.728 days (day) |
| 199800 Sy | = 10425460.104 weeks (wk) |
| 199800 Sy | = 199940.33076164 years (yr) |
| 199800 Sy | = 2399283.9691397 months (mo) |
| 199800 Sy | = 19991.497371272 decades (dec) |
| 199800 Sy | = 1999.1497371272 centuries (cent) |
| 199800 Sy | = 199.91497371272 millenniums (mill) |