Pay attention to the work schedule on holidays and public holidays:
December 22 (Sat) - working day
December 23-25 - weekend
December 26-28 - working days
December 29 - working day until 5:00 pm - the last day for sending orders
December 30 - January 2 - days off
January 3-4 - working days
January 5-7 - days off
From January 8th - regular work schedule