While the extended Tuesday night hours were created with the locals in mind, it's also a good way for visitors with limited time in Florence to extend their sightseeing time!
https://www.uffizi.it/en/news/uffizi-by-night-2024
https://www.uffizi.it/en/notices/opening-easter-monday
The Uffizi and Pitti are usually closed on Mondays, and the Boboli is usually closed on the first Mondays of the month so Easter Monday "exceptional" openings for all 3 is special indeed! :O)
Also note the new QR-code advance ticketless booking.