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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.| 19 Sidereal Years | to common time units |
|---|---|
| 19 Sy | = 599604840.576 seconds (s) |
| 19 Sy | = 9993414.0096 minutes (min) |
| 19 Sy | = 166556.90016 hours (hr) |
| 19 Sy | = 6939.87084 days (day) |
| 19 Sy | = 991.41012 weeks (wk) |
| 19 Sy | = 19.013344767123 years (yr) |
| 19 Sy | = 228.16013720548 months (mo) |
| 19 Sy | = 1.9010933436145 decades (dec) |
| 19 Sy | = 0.19010933436145 centuries (cent) |
| 19 Sy | = 0.019010933436145 millenniums (mill) |