Philippine Standard Time – not a joke!

Philippine Standard Time Clock

Starting June 1, there will be one less excuse for “Filipino time” – which is synonymous with always being late – as public clocks must be set to Philippine Standard Time following a new law signed by President Aquino on May 15. Government offices must follow, and media are required to comply as well in their displays and announcements of the time.

Future Philippine Standard Time Clock ?

Photo courtesy of

Will every public building soon have such a clock? We don’t know, but the hearth of the new Philippine Standard Time (PST) will look as this:

rubidium atomic clock Photo courtesy of

The time base for the synchronized time, called PST, will be determined by PAGASA through a rubidium clock. A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency. It is the most inexpensive, compact, and widely used type of atomic clock.

The Philippine Standard Time (PST) is not new. It has for a long time been displayed on the PAGASA website. Other DOST offices have also been following it, but not all do the same.


Photo courtesy of

The roots of “Filipino time” can be traced back to Spanish colonial era. So, how do they change a nearly 500 years old behavior? Tomorrow, maybe…

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2 Responses

  1. CSI says:

    Hi Everyone,

    You can be compliant to Philippine Standard Time Law with “CSI GPS Sync Clocks.”
    Republict Act. 10535 (Philippine Standard Time Law) >>

    Other Synchronized Clock Systems are also available for your facilities requirement.
    Learn more in our website >>
    Facebook >>

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