They are not a date type - the options are:

30 Days (Display) Attribute 30
60 Days (Display) Attribute 60

180 Days (Display) Attribute 180

and I am expecting:

Do A Search For Offers

merchant= current users merchant
offerCreateDate => Current Date/Time - ddwn DateFilters Attribute: 30

Passing the number of days back to filter the offer data using the Option Set,.