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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.| 221300 Sidereal Years | to common time units |
|---|---|
| 221300 Sy | = 6983818485235.2 seconds (s) |
| 221300 Sy | = 116396974753.92 minutes (min) |
| 221300 Sy | = 1939949579.232 hours (hr) |
| 221300 Sy | = 80831232.468 days (day) |
| 221300 Sy | = 11547318.924 weeks (wk) |
| 221300 Sy | = 221455.43141918 years (yr) |
| 221300 Sy | = 2657465.1770301 months (mo) |
| 221300 Sy | = 22142.734575888 decades (dec) |
| 221300 Sy | = 2214.2734575888 centuries (cent) |
| 221300 Sy | = 221.42734575888 millenniums (mill) |