It is the current local time right now in Dededo Village, Yigo Village, Tamuning-Tumon-Harmon Village, Mangilao Village, Barrigada Village and in all Guam’s cities. 
Guam’s time zone: ChST or UTC+10:00

No daylight saving time (DST) in Guam.

Full name: Guam
Continent: Oceania
Region: Micronesia
Population: 159,358
Area: 549 km²
Capital: Hagåtña
Currency: Dollar (USD)
Phone code: +1-671
Domain: .gu
Wikipedia article: Guam