Sir Vey
Unable to answer "What are the opening hours of Monroe Post Office (Post Office)?" for https://osm.org/way/488952588 via StreetComplete 31.3:

"Retail Lobby" hours: Mon-Fri: 8:00-11:00, 13:00-16:00 Sat: 9:00-11:00

"PO Box Section Lobby" is open 24 hours.

How should this be tagged?