Date-time must be a POSIXct, POSIXlt, Date, chron, yearmon, yearqtr, zoo, zooreg, timeDate, xts, its, ti, jul, timeSeries, and fts objects.
Details
date()
does not yet support years before 0 C.E.
Also date()
is not defined for Period objects.
Base compatibility
date()
can be called without any arguments to return a string representing
the current date-time. This provides compatibility with base:date()
which
it overrides.
Examples
x <- ymd_hms("2012-03-26 23:12:13", tz = "America/New_York")
date(x)
#> [1] "2012-03-26"
as.Date(x) # by default as.Date assumes you want to know the date in UTC
#> [1] "2012-03-27"
as.Date(x, tz = "America/New_York")
#> [1] "2012-03-26"
date(x) <- as.Date("2000-01-02")
x
#> [1] "2000-01-02 23:12:13 EST"