This is on the 1st of December each year.
Each year, the UK Polar Network has a competition.
On December 1st 1959, 12 nations signed the Antarctic Treaty, a document declaring that Antarctica would be off limits to military activity and setting it aside as a place for peace and scientific discoveries. Since 2010, December 1st has been celebrated each year to mark this milestone of peace and to inspire future decisions. We hope to extend the celebrations worldwide through our Antarctic Flags initiative, giving new generations the opportunity to learn about the Antarctic Treaty and to share, interpret and cherish the values associated with Antarctica.
Register by October 31st to take part, and send your flag to a scientist in Antarctica.