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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.| 165000000 Sidereal Years | to common time units |
|---|---|
| 165000000 Sy | = 5.20709466816E+15 seconds (s) |
| 165000000 Sy | = 86784911136000 minutes (min) |
| 165000000 Sy | = 1446415185600 hours (hr) |
| 165000000 Sy | = 60267299400 days (day) |
| 165000000 Sy | = 8609614200 weeks (wk) |
| 165000000 Sy | = 165115888.76712 years (yr) |
| 165000000 Sy | = 1981390665.2055 months (mo) |
| 165000000 Sy | = 16509494.826126 decades (dec) |
| 165000000 Sy | = 1650949.4826126 centuries (cent) |
| 165000000 Sy | = 165094.94826126 millenniums (mill) |