Computation of time
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
Except where otherwise specified, Saturdays, Sundays and Federal Government holidays will be included in computing the time period allowed for filing any document or paper under this part or 15 CFR part 970, but when a time period expires on any of these days, that time period will be extended to include the next following Federal Government work day. Filing periods expire at the close of business on the day specified, for the office specified.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.