%%

a ‘%’ character

%a

abbreviated weekday name

%A

full weekday name

%b

abbreviated month name

%B

full month name

%c

shorthand for %X %x, the locale format for date and time

%d

day of the month as a decimal number (01-31)

%e

same as %d but does not print the leading 0 for days 1 through 9

%F

milliseconds as a decimal number (000-999)

%H

hour based on a 24-hour clock as a decimal number (00-23)

%I

hour based on a 12-hour clock as a decimal number (01-12)

%j

day of the year as a decimal number (001-366)

%m

month as a decimal number (01-12)

%M

minute as a decimal number (00-59)

%p

AM/PM designation for the locale

%S

second as a decimal number (00-59)

%w

weekday as a decimal number (0-6), where Sunday is 0

%x

date using the date representation for the locale

%X

time using the time representation for the locale

%y

year without century (00-99)

%Y

year with century (such as 1990)

%Z

time zone name (such as Pacific Daylight Time)

%z

time zone offset in hours and minutes from GMT (HHMM)