Except as specified in paragraphs (a) through (g) of this section, each CBP office shall be open for the transactions of general CBP business between the hours of 8:30 a.m. and 5 p.m. on all days of the year:
If a holiday falls on Saturday, the day immediately preceding such Saturday will be observed. If a holiday falls on Sunday, the day immediately following such Sunday will be observed. (5 U.S.C. 6103(b)(1) ) ; (E.O. No. 11582, Jan. 1, 1971; 34 FR 2957; 3 CFR Ch. 11)
19 C.F.R. §101.6