Before revision: Holidays alt=Five men seated for a meal with flags and festive decorations|alt=1912 Midwinter Day celebration|1912 Midwinter Day celebration There are two principal holidays celebrated across Antarctica: Midwinter Day on June 21 and Antarctica Day on December 1, which commemorates the signing of the Antarctic Treaty in 1959
After revision: Holidays There are two principal holidays celebrated across Antarctica: Midwinter Day on June 21 and Antarctica Day on December 1, which commemorates the signing of the Antarctic Treaty in 1959