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A year is the orbital period of the Earth moving in its orbit around the Sun. In astronomy, the Julian year is a unit of time; it is defined as 365.25 days of exactly 86400 seconds (SI base unit), totalling exactly 31557600 seconds in the Julian astronomical year.
A day is a unit of time. In common usage, it is either an interval equal to 24 hours or daytime, the consecutive period of time during which the Sun is above the horizon. The pe ..more definition+
In relation to the base unit of [time] => (seconds), 1 Years (yr) is equal to 31536000 seconds, while 1 Days (day) = 86400 seconds.642400 Years | to common time units |
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642400 yr | = 20258726400000 seconds (s) |
642400 yr | = 337645440000 minutes (min) |
642400 yr | = 5627424000 hours (hr) |
642400 yr | = 234476000 days (day) |
642400 yr | = 33496571.428571 weeks (wk) |
642400 yr | = 642400 years (yr) |
642400 yr | = 7708800 months (mo) |
642400 yr | = 64231.852885225 decades (dec) |
642400 yr | = 6423.1852885225 centuries (cent) |
642400 yr | = 642.31852885225 millenniums (mill) |