In the Central, if there is a paid Holiday during the week, your workweek is only 4 days, and your 5th day would be time and a half.
In a scheduled workweek in which there is a paid holiday, the guaranteed workweek shall be thirty-two (32) hours; in any scheduled workweek in which there are two (2) paid holidays, the guaranteed workweek shall be twenty-four (24) hours, etc. For hours worked in excess of thirty-two (32) or twenty-four (24) hours in a week, as applicable, an employee shall be paid at the rate of one and one-half (1 1/2) time the regular straight-time rate, provided the holiday or holidays fall within the scheduled workweek.
@542thruNthru posted above the language in the Central.
The OP asked about the Southern. It is the same as the Central. If there is a paid Holiday during the week, the standard workweek then becomes 32 hours. So your 5th day actually worked would be time and a half. Two paid Holidays and the standard workweek becomes 24 hours.
Time worked in excess of thirty-two (32) hours in any week which a holiday occurs or twenty-four (24) hours if a second holiday occurs in any week shall be paid for at the rate of time and one-half (1-1/2) where the holiday falls within the employee’s scheduled workweek
We don't normally work Saturday here so its time and a half. Thanksgiving was 8hrs straight time and the rest of the week is irrelevent in regards to being paid overtime rate on Saturday.