Antarctica Day is an international holiday recognizing the anniversary of the signing of the Antarctic Treaty in 1959.

Along with Midwinter Day, it is one of Antarctica's two principal holidays.

Antarctica Day was established by the Foundation for the Good Governance of International Spaces in 2010 as a way to highlight the international cooperation that makes governance of the continent possible and to encourage educators to incorporate Antarctica in their curriculum.

[3] As a relatively recent holiday, Antarctica Day has no longstanding traditions.

Flag flying is another common way people observe the holiday.