Open main menu

UTC−12:00 is a time offset that subtracts 12 hours from Coordinated Universal Time (UTC). It is the last to celebrate a New Year, and it is sometimes referred to as the International Date Line West time zone (IDLW).[1]

UTC−12:00
UTC hue4map X world Robinson.png
All time zones defined by difference with UTC
Min Behind (−) 0 Ahead (+)
:00 12 11 10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
:30 9 3 2 3 4 5 6 9 10
:45 5 12 13
Areas in a darker shade use daylight saving time. The base color shows the standard time.
  UTC−12:00 180 degrees
05:00, 18 December 2018 UTC−12:00 [refresh]
Central180 degrees
Western border (nautical)180 degrees
Eastern border (nautical)172.5 degrees W
Date-time group (DTG)Y
UTC−12: blue (December), orange (June), yellow (all year round), light blue (sea areas)

Contents

As standard time (all year round)Edit

OceaniaEdit

UTC−12 is a nautical time zone comprising the high seas between 180° and 172°30′W longitude, and the time is obtained by subtracting twelve hours from Coordinated Universal Time. Ships using this time are the last to begin each calendar day.

Characteristics of the time zone that observes UTC−12Edit

A number of inhabited islands lie within the longitudinal limits of this time zone, but none of them keeps the date and time of UTC−12. Instead, they keep the time and date (or just the date) of one of the neighbouring zones, usually because they belong, politically, to an island group whose other members lie mostly in the neighbouring time zone.

Since the International Date Line West (IDLW) time zone represents the last place on Earth where a particular date exists before rolling over to the next date, it is sometimes used for deadlines and referred to as Anywhere on Earth (AoE). This means that if the deadline has not passed in the UTC–12 zone, the deadline has not yet passed.[1]

See alsoEdit

ReferencesEdit

  1. ^ a b "IEEE 802.16 AOE Deadline Documentation". IEEE 802 LAN/MAN Standards Committee. Retrieved 1 January 2018.