On March 29, 2023, USCIS announced that when the last day to file a benefit request or respond to a USCIS action falls on a Saturday, Sunday, or federal holiday, it will consider a filing or response submitted on paper timely if received by the end of the next business day.
USCIS has extended the validity of conditional green cards for 48 months for individuals with pending I-751 or I-829. See: USCIS Extends Status of Conditional Permanent Residents to 24 Months with Pending I-751 or I-829