Anywhere on Earth (AoE) is a calendar designation which indicates that a period expires when the date passes everywhere on Earth. The last place on Earth where any date exists is on Howland Island, in the IDLW time zone (the “Hawaii side” of the International Date Line), and so is the last spot on the globe for any day to exist. Therefore, the day ends Anywhere on Earth(AoE) when it ends on Howland Island.
The IDLW time zone has the largest negative UTC offset of all time zones (-12 hours). Therefore, it is the last time zone for any day to exist, and the day ends AoE when it ends in the IDLW time zone.
Source: Anywhere on Earth