Complex sentence: The Philippines currently does not observe daylight saving time, although it was enforced for short periods between 1986 and 1998 under Presidents Corazón Aquino and Fidel Ramos.
Split into simpler sentences: The Philippines currently does not observe daylight saving time, although it has in the past. The country experimented with daylight saving time for short periods between 1986 and 1998 during the presidencies of Corazón Aquino and Fidel Ramos.