dates.add-days
Shift an ISO date by a whole number of days, forwards or backwards, with exact calendar arithmetic.
add_days in RustTagged leap-year
3 capabilities
dates.is-leap-year
Whether a year is a Gregorian leap year: every 4th, except centuries, except every 400th.
is_leap_year in Rust
dates.month-boundaries
The first day, last day and length of the calendar month containing a date.
month_boundaries in Rust