17 C.F.R. § 240.0-2
(c) Electronic filings. Filings made by direct transmission 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.
Cross References: For registration and exemption of exchanges, see §§ 240.6a-1 to 240.6a-3. For forms for permanent registration of securities, see § 240.12b-1. For regulations relating to registration of securities, see §§ 240.12b-1 to 240.12b-36. For forms for applications for registration of brokers and dealers, see §§ 240.15b1-1 to 240.15b9-1.
[58 FR 14682, Mar. 18, 1993, as amended at 65 FR 24801, Apr. 27, 2000; 68 FR 25799, May 13, 2003; 73 FR 973, Jan. 4, 2008; 88 FR 12209, Feb. 27, 2023]