Title
Philippine Standard and Daylight Saving Time Law
Law
Commonwealth Act No. 91
Decision Date
Oct 26, 1936
Commonwealth Act No. 91 establishes the standard time of the Philippines based on mean astronomical time, allowing the President to establish daylight savings time during certain periods, which governs the movement of common carriers and applies to all statutes, orders, rules, and regulations related to timing.

Questions (Commonwealth Act No. 91)

The standard time of the Philippines is fixed based on the mean astronomical time at 120 degrees East Longitude, Greenwich Meridian.

The mean astronomical time at 120° East Longitude, Greenwich Meridian.

The President of the Philippines.

Within the periods from March to June and from November to January, inclusive.

It is established by advancing the standard time by one hour.

The President must retard DST by another hour on another date he determines, so that during certain periods of the year, the standard time is one hour in advance of the specified mean astronomical time.

It ensures that during certain periods of the year, the standard time is one hour in advance of the mean astronomical time at 120° East Longitude, Greenwich Meridian.

The date and hour when DST shall commence and terminate.

The movement of all common carriers.

In all statutes, orders, rules and regulations relating to the time of performance of an act or the time within which a right accrues or determines, it is understood that time refers to the standard or DST as established.

The standard or the daylight saving time as established—so if DST is in effect, DST governs.

The time of performance is governed by the standard or DST as established under the Act.

Upon its approval.

October 26, 1936.


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