PHT to MST

About Philippine Time

The Philippines is a fixed UTC+8. It is a heavily quoted zone in outsourcing schedules, which is why the pairs from it to North America are among the most searched on this site.

Cities on this clock: Beijing, Shanghai, Guangzhou, Shenzhen, Chongqing, Taipei, Hong Kong, Singapore.

Watch out: Philippine Standard Time is often written PST locally — the same letters as US Pacific Standard Time, which is sixteen hours behind it.

About Mountain Time

Mountain Time is UTC−7 as MST and UTC−6 as MDT, on the same transition dates as the rest of the United States. Arizona is the exception worth knowing: almost all of it stays on MST all year, so for the eight months the rest of the zone is on MDT, Phoenix keeps the same clock as Los Angeles rather than Denver.

Cities on this clock: Denver, Salt Lake City, Calgary, Edmonton.

How the difference is worked out

The gap between Philippine Time and Mountain Time is not one number. The two zones change their clocks on different dates, so for part of the year the difference is 14 hours and for the rest it is something else — the table above lists each stretch of 2026 with the date it starts and which country's clocks moved.

With both zones on their own standard time — daylight saving not in force anywhere — Mountain Time is 15 hours behind Philippine Time. That figure never changes; everything else on this page follows from it plus whichever clocks have moved.

Every figure here comes from the IANA time zone database via your browser's own Intl engine, using the zone ids Asia/Manila and America/Denver. Nothing is looked up on a server and nothing about your visit is recorded.