Guam is 2 hours ahead of Manila. Guam uses Chamorro Standard Time (ChST, UTC+10) while Manila uses Philippine Standard Time (PST, UTC+8). When it's 12:00 PM in Guam, it's 10:00 AM in Manila.
Neither location observes daylight saving time, so the time difference remains constant year-round.
Best calling time: 11:00 AM - 8:00 PM Guam time. This corresponds to 9:00 AM - 6:00 PM in Manila, covering standard business hours.
Guam has a significant Filipino community, and there are frequent flights between Guam and Manila taking about 4 hours. The Philippines and Guam share historical ties as both were once part of the Spanish colonial empire.