The current day and time
Examples
now()
#> [1] "2024-12-10 09:34:25 UTC"
now("GMT")
#> [1] "2024-12-10 09:34:25 GMT"
now("")
#> [1] "2024-12-10 09:34:25 UTC"
now() == now() # would be TRUE if computer processed both at the same instant
#> [1] FALSE
now() < now() # TRUE
#> [1] TRUE
now() > now() # FALSE
#> [1] FALSE
today()
#> [1] "2024-12-10"
today("GMT")
#> [1] "2024-12-10"
today() == today("GMT") # not always true
#> [1] TRUE
today() < as.Date("2999-01-01") # TRUE (so far)
#> [1] TRUE