Capital City:

name: Hagatna (Agana)

geographic coordinates: 13 28 N, 144 44 E

time difference: UTC+10 (15 hours ahead of Washington, DC, during Standard Time)

etymology: the name Hagatna is derived from the Chamorro word haga, meaning "life's blood" and referring to the town's role as the center of government for the island

Definition:

This entry gives the name of the seat of government, its geographic coordinates, the time difference relative to Coordinated Universal Time (UTC) and the time observed in Washington, DC, and, if applicable, information on daylight saving time (DST). Where appropriate, a special time zone note has been added to highlight those countries that have multiple time zones. Finally, etymology explains how the capital acquired its name.

Source: CIA World Factbook