Technical Specifications & Standards
Official chronometric properties, ISO standards, and international database registry identifiers for Philippine Time:
Daylight Saving Time (DST) Transitions
⬆️ Spring Forward (Clocks Advance)
None (The country has not used daylight saving since brief trials in 1978 and 1990)
⬇️ Fall Back (Clocks Return)
None
Observing Jurisdictions & Subdivisions
1 Sovereign NationsSovereign nations, administrative subdivisions, and regional territories officially operating under PHT:
Regional Subdivisions & Territory Details
Financial Markets & Trading Hours
Manila is one of the world's largest business process outsourcing (BPO) and IT services hubs, running 24-hour round-the-clock operations serving North American, European, and Australian corporate desks.
Local Hours: 09:30 - 15:00 PHT
UTC Window: 01:00 - 09:00 UTC
Major Cities in PHT
Primary metropolitan centers and financial hubs observing this time zone:
Adoption History & Astronomical Facts
Year Established: 1845
During early Spanish colonial rule, the Philippines was placed on the American calendar because trade was conducted via galleons sailing between Manila and Acapulco, Mexico. In 1844, Governor-General Narciso Clavería decreed that Tuesday, December 31, 1844 would be struck from the calendar entirely, so that the colony jumped straight from December 30 to Wednesday, January 1, 1845, aligning the islands with Asia and Australia.
In 2013, the Philippine Congress passed Republic Act 10535, mandating all government offices, schools, and broadcasters to sync their clocks to the PAGASA atomic clock to combat the cultural habit of arriving late, known locally as 'Filipino Time'.
Frequently Asked Questions about PHT
Does the Philippines observe Daylight Saving Time?
No. The Philippines stays on Philippine Time (UTC+8) year-round. Although brief daylight saving periods were trialed in 1954, 1978, and 1990 to manage energy crises, none were made permanent.
Which other Asian countries share the same time zone as Manila?
The Philippines shares the exact UTC+8 offset with Singapore, Malaysia, Mainland China, Hong Kong, Macau, Taiwan, and Western Australia (Perth).
What is the official source of Philippine Standard Time?
Under Republic Act 10535, the official time of the Philippines is maintained by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) using rubidium atomic clocks.