label_date()/label_time()These functions are kept for backward compatibility; you should switch
to label_date()/label_time() for new code.
date_format(format = "%Y-%m-%d", tz = "UTC", locale = NULL)time_format(format = "%H:%M:%S", tz = "UTC", locale = NULL)
For label_date() and label_time() a date/time format
string using standard POSIX specification. See strptime() for details.
For label_date_short() a character vector of length 4 giving the format
components to use for year, month, day, and hour respectively.
a time zone name, see timezones(). Defaults
to UTC
Locale to use when for day and month names. The default
uses the current locale. Setting this argument requires stringi, and you
can see a complete list of supported locales with
stringi::stri_locale_list().