Tests whether each year is a leap year.
See also
Other leap year:
dtt_feb29_to_28()
Examples
dtt_leap_year(as.Date("1999-03-04", "2000-02-01"))
#> [1] NA
Tests whether each year is a leap year.
Other leap year:
dtt_feb29_to_28()
dtt_leap_year(as.Date("1999-03-04", "2000-02-01"))
#> [1] NA