The following format directives print single components of the date.
a
locale’s abbreviated weekday name (Sun..Sat)
A
locale’s full weekday name, variable length (Sunday..Saturday)
b
h
locale’s abbreviated month name (Jan..Dec)
B
locale’s full month name, variable length (January..December)
m
month (01..12)
d
day of month (01..31)
w
day of week (0..6)
j
day of year (001..366)
U
week number of year with Sunday as first day of week (00..53)
W
week number of year with Monday as first day of week (00..53)
Y
year (1970…)
y
last two digits of year (00..99)