The following format directives print combinations of time and date components.
time, 12-hour (hh:mm:ss [AP]M)
time, 24-hour (hh:mm:ss.xxxxxxxxxx)
locale’s time representation (H:M:S). The seconds field includes a fractional part.
locale’s date and time in ctime format (Sat Nov 04 12:02:33 EST 1989). This format does not include any fractional part in the seconds field.
locale’s date representation (mm/dd/yy)
Date and time, separated by ’+’, for example
The time is given in the current timezone (which may be affected by
TZ environment variable). This is a GNU extension. The
seconds field includes a fractional part.