[d], [dd] : Day Number (1-31)
Use [d] to get the number part of a date over 1 or 2 digits.
Use [dd] to get the number part of a date over 2 digits always.
Example : on August 3rd
•[d] will equal 3
•[dd] equals 03
On November 11th
•[d] and [dd] will both be equal to 11
This information can also be displayed using Roman numerals.