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)" without requiring time zone calculations or

daylight saving time Daylight saving time (DST), also referred to as daylight savings time, daylight time (Daylight saving time in the United States, United States and Daylight saving time in Canada, Canada), or summer time (British Summer Time, United Kingdom, ...

adjustments. For any given date, the latest place on Earth where it would be valid is on

Howland and Baker Islands Howland Island and Baker Island are two reserved U.S. atolls in the Equatorial Pacific that are located close to one another. Both islands are strict wildlife refuges, the larger of which is Howland Island. They are both part of the larger ...

, in the IDLW time zone (the

Western Hemisphere The Western Hemisphere is the half of the planet Earth that lies west of the Prime Meridian (which crosses Greenwich, London, United Kingdom) and east of the 180th meridian.- The other half is called the Eastern Hemisphere. Geopolitically, ...

side of the

International Date Line The International Date Line (IDL) is the line extending between the South and North Poles that is the boundary between one calendar day and the next. It passes through the Pacific Ocean, roughly following the 180.0° line of longitude and de ...

). Therefore, the day ends AoE when it ends on Howland Island. The convention originated in

IEEE 802.16 IEEE 802.16 is a series of wireless broadband standards written by the Institute of Electrical and Electronics Engineers (IEEE). The IEEE Standards Board established a working group in 1999 to develop standards for broadband for wireless metropo ...

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 Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communica ...

of the following day,

being halfway around the world from the

prime meridian A prime meridian is an arbitrarily chosen meridian (geography), meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. On a spheroid, a prime meridian and its anti-meridian (the 180th meridian ...

that is the base reference longitude for UTC. Thus, in standard notation this is: : UTC−12:00 (

DST Daylight saving time (DST), also referred to as daylight savings time, daylight time (United States and Canada), or summer time (United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the long ...

is not applicable)

References

External links

IEEE 802.16 AOE Deadline Documentation
— IEEE802.org

— WorldTimeZone.com
AoE – Anywhere on Earth (Standard Time)
— TimeAndDate.com
Timezone of "AoE" for a conference submission deadline?
— StackExchange.com Calendars Time zones