d

day of month without leading zero for single digits

dd

day of month with leading zero for single digits.

ddd

day of week as a three letter abbreviation

dddd

full name of day of week

M

month without leading zero for single digit

MM

month with leading zero for single digit

MMM

month as three letter abbreviation.

MMMM

full name of month

yy

last two digits of year

yyyy

full four digits of year

h

hours without leading zeros for single digits (12 hour)

hh

hours without leading zeros for single digits (12 hour).

H

hours without leading zeros for single digits (24 hour)

HH

hours with leading zeros for single digits (24 hour)

m

minutes without leading zeros for single digits

mm

minutes with leading zeros for single digits

s

seconds without leading zeros for single digits

ss

seconds with leading zeros for single digits

t, tt

single character or multiple character a.m./p.m. string