(a) General. The principal office of the Commission, at 100 F Street, NE., Washington, DC 20549, is open each day, except Saturdays, Sundays, and federal holidays, from 9 a.m. to 5:30 p.m., Eastern Standard Time or Eastern Daylight Saving Time, whichever is currently in effect, provided that hours for the filing of documents pursuant to the Acts or the rules and regulations thereunder are as set forth in paragraphs (b) and (c) of this section.

(b) Submissions made in paper. Filers may submit paper documents filed with or otherwise furnished to the Commission each day, except Saturdays, Sundays and federal holidays, from 8 a.m. to 5:30 p.m., Eastern Standard Time or Eastern Daylight Saving Time, whichever is currently in effect.

(c) Submissions by direct transmission. Electronic filings and other documents may be submitted to the Commission each day, except Saturdays, Sundays, and Federal holidays, from 6 a.m. to 10 p.m., Eastern Standard Time or Eastern Daylight Saving Time, whichever is currently in effect.