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A millennium (plural millennia or millenniums) is a period of time equal to 1000 years, also called kiloyears. It derives from the Latin mille, thousand, and annus, year. ..more definition+
In relation to the base unit of [time] => (seconds), 1 Sidereal Years (Sy) is equal to 31558149.504 seconds, while 1 Millenniums (mill) = 31540000000 seconds.| 20000 Sidereal Years | to common time units |
|---|---|
| 20000 Sy | = 631162990080 seconds (s) |
| 20000 Sy | = 10519383168 minutes (min) |
| 20000 Sy | = 175323052.8 hours (hr) |
| 20000 Sy | = 7305127.2 days (day) |
| 20000 Sy | = 1043589.6 weeks (wk) |
| 20000 Sy | = 20014.047123288 years (yr) |
| 20000 Sy | = 240168.56547945 months (mo) |
| 20000 Sy | = 2001.1508880152 decades (dec) |
| 20000 Sy | = 200.11508880152 centuries (cent) |
| 20000 Sy | = 20.011508880152 millenniums (mill) |