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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 Gregorian Years (GY) is equal to 31556952 seconds, while 1 Millenniums (mill) = 31540000000 seconds.| 18 Gregorian Years | to common time units |
|---|---|
| 18 GY | = 568025136 seconds (s) |
| 18 GY | = 9467085.6 minutes (min) |
| 18 GY | = 157784.76 hours (hr) |
| 18 GY | = 6574.365 days (day) |
| 18 GY | = 939.195 weeks (wk) |
| 18 GY | = 18.01195890411 years (yr) |
| 18 GY | = 216.14350684932 months (mo) |
| 18 GY | = 1.8009674571972 decades (dec) |
| 18 GY | = 0.18009674571972 centuries (cent) |
| 18 GY | = 0.018009674571972 millenniums (mill) |