In a word, yes. As I’ve mentioned before, Florida Rule of Judicial Procedure 2.514 took the confusion out of legal holidays for the Florida court system. The Rule now defines Legal Holidays as:
(A) the day set aside by section 110.117, Florida Statutes, for observing New Year’s Day, Martin Luther King, Jr.’s Birthday, Memorial Day, Independence Day, Labor Day, Veterans’ Day, Thanksgiving Day, the Friday after Thanksgiving Day, or Christmas Day, and
(B) any day observed as a holiday by the clerk’s office or as designated by the chief judge.
So if you had a deadline that should have fallen today, enjoy your extra day!