Leap year

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A leap year (an aa kent as an intercalary year or a bissextile year) is a year conteenin ane addeetional day (or, in the case o lunisolar calendars, a month) addit tae keep the calendar year synchronised wi the astronomical or saisonal year.[1]

References[eedit | eedit soorce]

  1. Meeus, Jean (1998), Astronomical Algorithims, Willmann-Bell, p. 62