PM reads cleanly across the Americas in this dataset, but the same letters can mean different things elsewhere (notably CST, EST, and IST overlap with non-American labels). Pin the IANA zone when the audience is international.
America/Miquelon has an upcoming offset change on November 1, 2026. After that point, PM on this page will read a different UTC offset until the next transition, so any saved timestamp should anchor to the IANA zone rather than the abbreviation.
For precise work, the safest equivalent of PM is the exact IANA zone used by your city or system. America/Miquelon sits at -02:00, behind UTC, which means daily logs in this zone reach a new calendar date after UTC does — relevant for date-aligned reports and billing cutoffs.
Within this single zone (America/Miquelon, -02:00), PM is unambiguous, so the abbreviation and the IANA zone effectively interchange.