%z
timezone offset. eg -500
%Z
timezone name, eg EST
%y
two digit year, eg 18
%Y
full year, eg 2018
%w
day of the week as number, 0-6
%v
equivilent to ‘%e-%b-%Y’
%W
week of the year (00-53)
%T
= ‘%H:%M:%S’
%s
sum seconds since Epoch, UTC
%p
am/pm
%m
month, (01-12)
%M
Minute (00-59)
%l
12-hour hr (1-12)
%k
24-hr hr (0-23)
%j
day of the year (001-366)
%F
= %Y-%m-%d
%d
day of month (01-31)
%D
= %m/%d/%y
%A
full weekday name (national representatino)
%a
abbreviated weekday