5.7 Format Strings
20240407
A common standard (based on strftime) for specifying a date format
string will replace any %X special characters with specific
components from the date (and time). For example, based on the result
of a call to the function lubridate::now(), which is
Saturday, 14 December 2024, 08:45:33 AM, the format
is %A, %e %B %Y, %H:%M:%S %p.
The format strings that are available include:
%a\(\longrightarrow\) Sat (3 char day name)%A\(\longrightarrow\) Saturday (full day name)%b\(\longrightarrow\) Dec (3 char month name)%B\(\longrightarrow\) December (full month name)%d\(\longrightarrow\) 14 (01-31 leading 0 numeric day of month)%e\(\longrightarrow\) 14 (1-31 numeric day of month)%H\(\longrightarrow\) 08 (00-23 numeric 24 hours)%I\(\longrightarrow\) 08 (01-11 numeric 12 hours)%-I\(\longrightarrow\) 8 (1-11 numeric hours no leading 0)%m\(\longrightarrow\) 12 (01-12 numeric month)%M\(\longrightarrow\) 45 (00-59 numeric minutes)%p\(\longrightarrow\) AM (AM,PM upper morning or afternoon)%P\(\longrightarrow\) am (am,pm lower morning or afternoon)%S\(\longrightarrow\) 33 (00-60 numeric seconds)%-S\(\longrightarrow\) 33 (0-60 numeric seconds no leading 0)%y\(\longrightarrow\) 24 (00-99 2 digit year)%Y\(\longrightarrow\) 2024 (4 digit year)%Z\(\longrightarrow\) AEDT (time zone)
A good resource is Fabrizio Musacchio’s strftime Cheat Sheet
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