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These are year-week-day methods for the arithmetic generics.

You cannot add weeks or days to a year-week-day calendar. Adding days is much more efficiently done by converting to a time point first by using as_naive_time() or as_sys_time(). Adding weeks is equally as efficient as adding 7 days. Additionally, adding weeks to an invalid year-week object (i.e. one set to the 53rd week, when that doesn't exist) would be undefined.


# S3 method for clock_year_week_day
add_years(x, n, ...)




A year-week-day vector.


[integer / clock_duration]

An integer vector to be converted to a duration, or a duration corresponding to the arithmetic function being used. This corresponds to the number of duration units to add. n may be negative to subtract units of duration.


These dots are for future extensions and must be empty.


x after performing the arithmetic.


x and n are recycled against each other using tidyverse recycling rules.


x <- year_week_day(2019, 1, 1)
add_years(x, 1:2)
#> <year_week_day<Sunday><day>[2]>
#> [1] "2020-W01-1" "2021-W01-1"