d: Represents the day of the month as a number from 1 through 31.
dd: Represents the day of the month as a number from 01 through 31.
ddd: Represents the abbreviated name of the day (Mon, Tues, Wed, etc).
dddd: Represents the full name of the day (Monday, Tuesday, etc).
h: 12-hour clock hour (e.g. 4).
hh: 12-hour clock, with a leading 0 (e.g. 06)
H: 24-hour clock hour (e.g. 15)
HH: 24-hour clock hour, with a leading 0 (e.g. 22)
m: Minutes
mm: Minutes with a leading zero
M: Month number(eg.3)
MM: Month number with leading zero(eg.04)
MMM: Abbreviated Month Name (e.g. Dec)
MMMM: Full month name (e.g. December)
s: Seconds
ss: Seconds with leading zero
t: Abbreviated AM / PM (e.g. A or P)
tt: AM / PM (e.g. AM or PM
y: Year, no leading zero (e.g. 2015 would be 15)
yy: Year, leading zero (e.g. 2015 would be 015)
yyy: Year, (e.g. 2015)
yyyy: Year, (e.g. 2015)
K: Represents the time zone information of a date and time value (e.g. +05:00)
z: With DateTime values represent the signed offset of the local operating system's time zone from
Coordinated Universal Time (UTC), measured in hours. (e.g. +6)
zz: As z, but with leading zero (e.g. +06)
zzz: With DateTime values represents the signed offset of the local operating system's time zone from UTC, measured in hours and minutes. (e.g. +06:00)
f: Represents the most significant digit of the seconds fraction; that is, it represents the tenths of a second in a date and time value.
ff: Represents the two most significant digits of the second's fraction in date and time
fff: Represents the three most significant digits of the second's fraction; that is, it represents the milliseconds in a date and time value.
ffff: Represents the four most significant digits of the second's fraction; that is, it represents the ten-thousandths of a second in a date and time value. While it is possible to display the ten thousandths of a second component of a time value, that value may not be meaningful.
fffff: Represents the five most significant digits of the second's fraction; that is, it represents the hundred-thousandths of a second in a date and time value.
ffffff: Represents the six most significant digits of the second's fraction; that is, it represents the millionths of a second in a date and time value.
fffffff: Represents the seven most significant digits of the second's fraction; that is, it represents the ten-millionths of a second in a date and time value.