New evidence for Social Security claims must be submitted 5 business days ahead of the hearing. See 20 CFR 404.935(a) and HALLEX I-2-5-13. With a typical weekend, that’s 7 days ahead of the hearing. Holidays, which are of course not business days, must be accounted for as well. So beware the 3-day holiday weekend, like the upcoming Columbus Day weekend coming up on October 9th this year.
Columbus Day is now celebrated as Indigenous Peoples’ Day in Maine and a dozen or so other states. If you have a hearing during the week of October 9th, you must take the holiday into account when calculating filing deadlines.
New evidence includes updated medical evidence and the Representative’s brief. Everything must be filed 5 business days ahead to be timely for the hearing. While filing earlier is always best, be aware of the deadline.