Refunds are calculated by counting calendar days and include Saturdays, Sundays and holidays. Deadline dates that fall on a Saturday, Sunday, or a holiday are extended through the next business day.
Courses with 49+ calendar days:
100% refund     11 calendar days from the start of the class
50% refund       4 calendar days following end of 100% refund date
0% refund         Begins at the end of the 50% refund period