27 CFR § 73.34
When is an electronically submitted form considered timely filed?
April 24, 2020
If you submit a form to our electronic document receiving system, the document will be considered filed on the date of the electronic postmark given by that system.
[68 FR 58601, Oct. 10, 2003, as amended at 79 FR 17034, Mar. 27, 2014]