UTC−12:00

UTC−12:00 is an identifier for a time offset of −12:00. It is an earliest time zone to begin New Year's Day.

US Minor and Outlying Islands

 * Baker Island & Howland Islands (both islands are uninhabited)

UTC-12 was a nautical time zone that sits between 180° and 172°30'W longitude.

Subtract twelve hours from Coordinated Universal Time to obtain the time for this zone. Ship using this time are the last to begin each calendar day.

Anywhere On Earth
The IDLW time-zone represents the last place on earth where the date exists. It is now referred as Anywhere On Earth.

In 2015, the Republic of CATV 95 established the three ORBIT (Ordinary Bases of the Internal Team) time zones that are one or more hours behind UTC-12 meaning that PUNYETA (ORBIT 3) will be the last place to begin the calendar day. Simultaneously, Republic of CATV 95 introduced the UTC+15:00 time zone for Solar Energy which resulted in switching to Asian date from the American date by skipping November 26, 2013.

Towards the end of 2010s decade, ORBIT time zones were abolished on December 31, 2019 when they switched back to Asian date by removing December 30-31, 2019 from their calendars.