7 CFR § 989.23
File
July 6, 2020
File means transmit or deliver to the Secretary or Committee, as the case may be, and such act shall be deemed to have been accomplished at the time:
(a) Of actual receipt by the Secretary or Committee in the event of personal delivery;
(b) Of receipt at the office of the telegraph company, in case submission is by telegram; or
(c) Shown by the postmark, in case submission is by mail.