Chamorro Time Zone

The zone includes the U.S. territories of Guam and the Northern Mariana Islands, where the Chamorro people are the original inhabitants.

As of March 19, 2024 it is the easternmost (farthest ahead) time zone shown on the U.S. government's time.gov webpage.

Although Wake, Howland and Baker Islands are U.S. territories in more easterly time zones (that are not shown), they are uninhabited.

At the end of Monday, December 30, 1844, both Guam and Mariana Islands continued directly to Wednesday, January 1, 1845, effectively removing Tuesday, December 31, 1844 from the calendar to follow the eastern hemisphere on the west side of the IDL and realign themselves from American to Asian dates.

[citation needed] The U.S. Congress formally created Chamorro Standard Time by federal Public Law 106-564 on December 23, 2000.