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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.| 21000 Sidereal Years | to common time units |
|---|---|
| 21000 Sy | = 662721139584 seconds (s) |
| 21000 Sy | = 11045352326.4 minutes (min) |
| 21000 Sy | = 184089205.44 hours (hr) |
| 21000 Sy | = 7670383.56 days (day) |
| 21000 Sy | = 1095769.08 weeks (wk) |
| 21000 Sy | = 21014.749479452 years (yr) |
| 21000 Sy | = 252176.99375342 months (mo) |
| 21000 Sy | = 2101.208432416 decades (dec) |
| 21000 Sy | = 210.1208432416 centuries (cent) |
| 21000 Sy | = 21.01208432416 millenniums (mill) |