Philippine Standard Time Philippine Standard Time Philippine Standard Time (, abbreviated PST or PhST), also known as Philippine Time (PHT), is the official name for the time in the Philippines. The country only uses one time zone (), and for a short period, it also used daylight saving time. Geographically, the Philippines lies within 116°40′ and 126°34′ east of the Prime Meridian, and is physically located within the time zone. Philippine Standard Time is maintained by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA). The Philippines shares the same time zone with Hong Kong, Macau, Singapore, China, Taiwan, Malaysia, Brunei, central Indonesia,
Aleutian Arc Aleutian Arc The Aleutian Arc is a large volcanic arc in the U.S. state of Alaska. It consists of a number of active and dormant volcanoes that have formed as a result of subduction along the Aleutian Trench. Although taking its name from the Aleutian Islands, this term is a geologic grouping rather than a geographic one, and the Aleutian Arc extends through the Alaska Peninsula following the Aleutian Range to the Aleutian Islands. The Aleutian Arc reflects subduction of the Pacific Plate beneath the North American Plate. It extends from the Kamchatka Peninsula in the west to the Gulf