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date_leap_year() detects if the year is a leap year.
date_leap_year()
date_leap_year(x)
A logical vector the same size as x. Returns TRUE if in a leap year, FALSE if not in a leap year, and NA if x is NA.
x
TRUE
FALSE
NA
[Date / POSIXct / POSIXlt]
A date or date-time to detect leap years in.
x <- as.Date("2019-01-01") x <- add_years(x, 0:5) date_leap_year(x) y <- as.POSIXct("2019-01-01", "America/New_York") y <- add_years(y, 0:5) date_leap_year(y)
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