Updating components

year(datetime) <- 2030
datetime

## [1] "2030-03-08 19:32:28 UTC"

hour(datetime) <- hour(datetime) + 1
datetime

## [1] "2030-03-08 20:32:28 UTC"

update(datetime, years = 2024, months = 2)

## [1] "2024-02-08 20:32:28 UTC"

update(datetime, years = 2024, months = 2, mdays = 30)

## [1] "2024-03-01 20:32:28 UTC"