Business day
(6) Business day means a day on which the creditor's offices are open to the public for carrying on substantially all of its business functions. However, for purposes of rescission under 1026.15 and 1026.23, and for purposes of 1026.19(a)(1)(ii), 1026.19(a)(2), 1026.19(e)(1)(iii)(B), 1026.19(e)(1)(iv), 1026.19(e)(2)(i)(A), 1026.19(e)(4)(ii), 1026.19(f)(1)(ii), 1026.19(f)(1)(iii), 1026.20(e)(5), 1026.31, and 1026.46(d)(4), the term means all calendar days except Sundays and the legal public holidays specified in 5 U.S.C. 6103(a), such as New Year's Day, the Birthday of Martin Luther King, Jr., Washington's Birthday, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day, and Christmas Day.