COMMONWEALTH ACT No. 91
AN ACT TO FIX THE STANDARD TIME OF THE PHILIPPINES, AND TO AUTHORIZE THE PRESIDENT OF THE PHILIPPINES TO ESTABLISH A DAYLIGHT SAVINGS TIME THEREIN
Be it enacted by the National Assembly of the Philippines:
Section 1. The standard time of the Philippines shall be fixed upon the basis of the mean astronomical time at one hundred and twenty degrees East Longitude, Greenwhich Meridian: Provided, That the President of the Philippines may, when the public interest so requires, and at any time or times, within the periods from March to June and from November to January, all inclusive, establish, by proclamation, a daylight saving time, by advancing by one hour, on such date as he shall determine, the standard time herein fixed, and by retarding such daylight saving time by another hour or such other date as he shall determine, so that during certain periods of the year, as above indicated, the standard time be one hour advance of the mean astronomical time at one hundred and twenty degrees East Longitude, Greenwhich Meridian. The President shall, in such proclamation, fix the date and hour when such daylight saving time shall commence and terminate.
Sec. 2. The standard time of the daylight saving time herein established shall govern the movement of all common carrier. In all statutes, order, rules and regulations relating to the time of performance of an act by any officer or department of the Government of the Commonwealth,1 or relating to the time within which any right shall accrue or determine, or within which any act shall or shall not be performed by any person in the Philippines, it shall be understood that the time shall be the standard or the daylight saving time as herein established, as the case may be.
This act shall take effect upon its approval.
Approved: October 26, 1936.