IF Statment using DateDimension Table

I would like to make an IF statement based on the date in my DateDimension Table.

Date is calculated as:

DateDimension = Calendar(Date(2018,12,23),Date(2019,12,31))

I would like to write an If statement:

Category = IF(DateDimension.Date=1/1/19,"Holiday","NA")

Is this possible? Right now, I am getting #Error as the result.

Do I have to make a second table of Holiday Dates and then match them to get a result?

Was trying to avoid making extraneous tables. TYIA.