Date Code Format is as follows (using date Jan 1, 2000 as an example): YYYYMMDD (becomes 2000-01-01) YYMM (becomes 0001) YYYYMM (becomes 200001) MMDDYY (becomes 010100) WWYY (becomes 0100 – WW is the 2 digit week number) YYWW (becomes 0001)

Note that options are generally derived from ‘strftime’ formatting, as in: https://devhints.io/strftime