Is a year a leap year?
If x is a recognized date-time object, leap_year will return whether x occurs during a leap year. If x is a number, leap_year returns whether it would be a leap year under the Gregorian calendar.
leap_year(date)
date |
a date-time object or a year |
TRUE if x is a leap year, FALSE otherwise
x <- as.Date("2009-08-02")
leap_year(x) # FALSE
leap_year(2009) # FALSE
leap_year(2008) # TRUE
leap_year(1900) # FALSE
leap_year(2000) # TRUEPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.