Anywhere on Earth

{{Short description|Calendar designation}}

File:Timezones2008 UTC-12 gray.png

Anywhere on Earth (AoE) is a calendar designation that indicates that a period expires when the date passes everywhere on Earth. It is a practice to help specify deadlines such as "March 16, 2004, End of Day, Anywhere on Earth (AoE)"{{Cite web|title=AAAI Squirrel AI Award for Artificial Intelligence for the Benefit of Humanity|url=https://www.aaai.org/Awards/squirrel-ai-award-call.php|access-date=2021-10-18|website=AAAI|archive-date=2022-05-11|archive-url=https://web.archive.org/web/20220511185907/https://www.aaai.org/Awards/squirrel-ai-award-call.php|url-status=dead}} without requiring timezone calculations or daylight saving time adjustments.{{Cite web|title=What does "All deadlines are: 11:59 PM UTC-12:00" mean?|url=https://academia.stackexchange.com/questions/151295/what-does-all-deadlines-are-1159-pm-utc-1200-mean|access-date=2022-01-26|website=Academia Stack Exchange}}

For any given date, the latest place on Earth where it would be valid is on Howland and Baker Islands, in the IDLW time zone (the Western Hemisphere side of the International Date Line). Therefore, the day ends AoE when it ends on Howland Island.{{Cite web|url=http://www.ieee802.org/16/aoe.html|title=IEEE 802.16 AOE Deadline Documentation|website=www.ieee802.org|access-date=2018-05-08}}

The convention originated in IEEE 802.16 balloting procedures. Many IEEE 802 ballot deadlines are established as the end of day using "AoE", for "Anywhere on Earth" as a designation. This means that the deadline has not passed if, anywhere on Earth, the deadline date has not yet passed.

The day's end AoE occurs at noon UTC of the following day, Howland and Baker Islands being halfway around the world from the prime meridian that is the base reference longitude for UTC. Thus, in standard notation this is:{{Cite web|url=https://www.timeanddate.com/time/zones/aoe|title=AoE – Anywhere on Earth (Time Zone Abbreviation)|website=www.timeanddate.com|language=en|access-date=2018-05-09}}

: UTC−12:00 (DST is not applicable)