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The Julian year, as used in astronomy and other sciences, is a time unit defined as exactly 365.25 days. This is the normal meaning of the unit "year" (symbol "a" from the Latin annus) used in various scientific contexts. - read more

How many years is one million days? Given that a year has 365 days, 1×106 days / 365.00 days per yr = 2 739.7 years. However, because one in every four years is a leap year (366 days) the year is an average of 365.25 days long. - read more

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