Format Pattern Description
d The day of the month. Single-digit days will not have a leading zero.
dd The day of the month. Single-digit days will have a leading zero.
ddd The abbreviated name of the day of the week, as defined in the DateTimeFormatInfo's AbbreviatedDayNames property.
dddd The full name of the day of the week, as defined in the DateTimeFormatInfo's DayNames property.
M The numeric month. Single-digit months will not have a leading zero.
MM The numeric month. Single-digit months will have a leading zero.
MMM The abbreviated name of the month, as defined in the DateTimeFormatInfo's AbbreviatedMonthNames property.
MMMM The full name of the month, as defined in the DateTimeFormatInfo's MonthNames property.
y The year without the century. If the year without the century is less than 10, the year is displayed with no leading zero.
yy The year without the century. If the year without the century is less than 10, the year is displayed with a leading zero.
yyy, yyyy The year in four digits, including the century.