C # Date formatting

System formatting

Symbol

	Grammar	Example (2016-05-09 13:09:55:2350)	Format description
Y	DateTime.Now.ToString ()	2016/5/9 13:09:55	Short Date long time
D	DateTime.Now.ToString ("D")	2016/5/9	Short Date
D	DateTime.Now.ToString ("D")	May 9, 2016	Long Date
F	DateTime.Now.ToString ("f")	May 9, 2016 13:09	Long Date short time
F	DateTime.Now.ToString ("F")	May 9, 2016 13:09:55	Long Date long time
G	DateTime.Now.ToString ("g")	2016/5/9 13:09	Short Date short time
G	DateTime.Now.ToString ("G")	2016/5/9 13:09:55	Short Date long time
T	DateTime.Now.ToString ("t")	13:09	Short time
T	DateTime.Now.ToString ("T")	13:09:55	Long time
U	DateTime.Now.ToString ("u")	2016-05-09 13:09:55z
U	DateTime.Now.ToString ("U")	May 9, 2016 5:09:55	Long date and long time of the Prime Meridian
M	DateTime.Now.ToString ("m")	May 9
M	DateTime.Now.ToString ("M")	May 9
R	DateTime.Now.ToString ("r")	Mon, 13:09:55 GMT
R	DateTime.Now.ToString ("R")	Mon, 13:09:55 GMT
Y	DateTime.Now.ToString ("y")	May 2016
Y	DateTime.Now.ToString ("Y")	May 2016
O	DateTime.Now.ToString ("o")	2016-05-09t13:09:55.2350000
O	DateTime.Now.ToString ("O")	2016-05-09t13:09:55.2350000
S	DateTime.Now.ToString ("s")	2016-05-09t13:09:55

Custom formatting

Symbol	Description	Grammar	Example (2016-05-09 13:09:55:2350)
Yy	Two digits after the year	DateTime.Now.ToString ("yy")	DateTime.Now.ToString ("yy"); = 16
yyyy	4-bit year	DateTime.Now.ToString ("yyyy")	DateTime.Now.ToString ("yyyy"); = 2016
Mm	two-digit month; 0 padding in front of singular month	DateTime.Now.ToString ("MM")	DateTime.Now.ToString ("MM"); = 05
Dd	Number of days	DateTime.Now.ToString ("dd")	DateTime.Now.ToString ("DD"); = 09
Ddd	Weeks	DateTime.Now.ToString ("ddd")	DateTime.Now.ToString ("ddd"); = Monday
dddd	Day of the Week	DateTime.Now.ToString ("dddd")	DateTime.Now.ToString ("dddd"); = Monday
hh	Number of hours in a 12-hour system	DateTime.Now.ToString ("hh")	DateTime.Now.ToString ("HH"); = 01
HH	Number of hours in a 24-hour system	DateTime.Now.ToString ("HH")	DateTime.Now.ToString ("HH"); = 13
Mm	Number of minutes	DateTime.Now.ToString ("mm")	DateTime.Now.ToString ("mm"); = 09
Ss	Number of seconds	DateTime.Now.ToString ("SS")	DateTime.Now.ToString ("SS"); = 55
Ff	Number of milliseconds first 2 bits	DateTime.Now.ToString ("ff")	DateTime.Now.ToString ("FF"); = 23
Fff	Number of milliseconds first 3 bits	DateTime.Now.ToString ("FFF")	DateTime.Now.ToString ("fff"); = 235
Ffff	Number of milliseconds first 4 bits	DateTime.Now.ToString ("ffff")	DateTime.Now.ToString ("FFFF"); = 2350
Separator	You can use separators to separate the days of the month and seconds. Contains values that are:-,/,: etc. non-key characters	DateTime.Now.ToString ("Yyyy-mm-dd HH:mm:ss:ffff"); = 2016-05-09 13:09:55:2350 DateTime.Now.ToString ("Yyyy/mm/dd HH:mm:ss:ffff"); = 2016/05/09 13:09:55:2350 DateTime.Now.ToString ("Yyyy/mm/dd HH:mm:ss:ffff dddd"); //= 2016/05/09 13:09:55:2350 Monday

C # Date formatting