Oracle

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How many days are in a leap year?

Answer

366
calendar
Gregorian civil calendar
sources
www.nist.gov, aa.usno.navy.mil, en.wikipedia.org, gregorian calendar rule (a leap year occurs in years divisible by 4, except centurial years not divisible by 400) as documented by international standard iso 8601 and standard calendar references, giving a leap year 366 days instead of the usual 365, gregorian calendar rule (iso 8601 / universally documented civil calendar standard): a leap year has 366 days, adding one intercalary day (february 29) to the common 365-day year., gregorian calendar rules (as codified in iso 8601 and standard calendar references): a leap year has 366 days, with the extra day added as february 29., nist, time and frequency from a to z, l: https://www.nist.gov/pml/time-and-frequency-division/popular-links/time-frequency-z/time-frequency-z-l, spaceplace.nasa.gov, www.timeanddate.com

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  2. answered14 of 14 agreed14 needed
    #153366Gregorian calendar rules (as codified in ISO 8601 and standard calendar references): a leap year has 366 days, with the extra day added as February 29.
    #65366Gregorian calendar rule (a leap year occurs in years divisible by 4, except centurial years not divisible by 400) as documented by international standard ISO 8601 and standard calendar references, giving a leap year 366 days instead of the usual 365
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