DateTime Format

Supported format variables:

dDisplays the day as a number without a leading zero (1-31).
ddDisplays the day as a number with a leading zero (01-31).
dddDisplays the day as an abbreviation (Sun-Sat).
ddddDisplays the day as a full name (Sunday-Saturday).
eDisplays the year in the current period/era as a number without a leading zero (Japanese, Korean and Taiwanese locales only).
eeDisplays the year in the current period/era as a number with a leading zero (Japanese, Korean and Taiwanese locales only).
gDisplays the period/era as an abbreviation (Japanese and Taiwanese locales only).
ggDisplays the period/era as a full name. (Japanese and Taiwanese locales only).
mDisplays the month as a number without a leading zero (1-12). If the m specifier immediately follows an h or hh specifier then minute is displayed.
mmDisplays the month as a number with a leading zero (01-12). If the mm specifier immediately follows an h or hh specifier then minute is displayed.
mmmDisplays the month as an abbreviation (Jan-Dec) using the strings given by the ShortMonthNames global variable.
mmmmDisplays the month as a full name (January-December) using the strings given by the LongMonthNames global variable.
yyDisplays the year as a two-digit number (00-99).
yyyyDisplays the year as a four-digit number (0000-9999).
hDisplays the hour without a leading zero (0-23).
hhDisplays the hour with a leading zero (00-23).
nDisplays the minute without a leading zero (0-59).
nnDisplays the minute with a leading zero (00-59).
sDisplays the second without a leading zero (0-59).
ssDisplays the second with a leading zero (00-59).
zDisplays the millisecond without a leading zero (0-999).
zzzDisplays the millisecond with a leading zero (000-999).
am/pmUses the 12-hour clock for the preceding h or hh specifier, and displays "am" for any hour before noon, and "pm" for any hour after noon. The am/pm specifier can use lower, upper, or mixed case, and the result is displayed accordingly.
a/pUses the 12-hour clock for the preceding h or hh specifier, and displays "a" for any hour before noon, and "p" for any hour after noon. The a/p specifier can use lower, upper, or mixed case,and the result is displayed accordingly.
"xx"Characters enclosed in single or double quotes are displayed as-is, and do not affect formatting.

Note: Windows FileName reserved characters are forbidden, such as \ / : * ? " < > |