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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.| 164000000000 Sidereal Years | to common time units |
|---|---|
| 164000000000 Sy | = 5.175536518656E+18 seconds (s) |
| 164000000000 Sy | = 8.62589419776E+16 minutes (min) |
| 164000000000 Sy | = 1.43764903296E+15 hours (hr) |
| 164000000000 Sy | = 59902043040000 days (day) |
| 164000000000 Sy | = 8557434720000 weeks (wk) |
| 164000000000 Sy | = 164115186410.96 years (yr) |
| 164000000000 Sy | = 1969382236931.5 months (mo) |
| 164000000000 Sy | = 16409437281.725 decades (dec) |
| 164000000000 Sy | = 1640943728.1725 centuries (cent) |
| 164000000000 Sy | = 164094372.81725 millenniums (mill) |