ChST

Units & Measurements abbreviation · Time Zone

ChST
Stands forChamorro Standard Time
CategoriesUnits & Measurements

ChST stands for Chamorro Standard Time, a time zone abbreviation.

Official time of Guam and the Northern Mariana Islands, US territories in the western Pacific, ten hours ahead of UTC. Guam's clocks run 14 or 15 hours ahead of Washington, D.C., depending on the season.

Example: Polls in Guam close at 8 p.m. ChST, before most of the mainland has woken up.

Usage notes

Congress established the zone by law in 2000 and named it for the Chamorro, the indigenous people of the Mariana Islands. Guam does not observe daylight saving. Because it lies west of the International Date Line, Guam promotes itself as the place "where America's day begins".

More time zone abbreviations

  • BRT – Brasilia Time
  • BST – British Summer Time
  • CAT – Central Africa Time
  • CDT – Central Daylight Time
  • CEST – Central European Summer Time
  • CET – Central European Time
  • CST – Central Standard Time (North America)
  • CT – Central Time
  • DST – Daylight saving time
  • EAT – East Africa Time
  • EDT – Eastern Daylight Time
  • EEST – Eastern European Summer Time

See all 64 time zone abbreviations →