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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.| 55 Sidereal Years | to common time units |
|---|---|
| 55 Sy | = 1735698222.72 seconds (s) |
| 55 Sy | = 28928303.712 minutes (min) |
| 55 Sy | = 482138.3952 hours (hr) |
| 55 Sy | = 20089.0998 days (day) |
| 55 Sy | = 2869.8714 weeks (wk) |
| 55 Sy | = 55.038629589041 years (yr) |
| 55 Sy | = 660.46355506849 months (mo) |
| 55 Sy | = 5.5031649420419 decades (dec) |
| 55 Sy | = 0.55031649420419 centuries (cent) |
| 55 Sy | = 0.055031649420419 millenniums (mill) |