general/unofficial-observances
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Persons Day
Canadian commemoration of court case declaring women are persons
Square Root Day
Unofficial holiday
Opposite Day
Children's game
National Donut Day
Holiday in the United States
Star Wars Day
Star Wars-themed observance on May 4 since 2011
Singles Awareness Day
Celebration of single people
System Administrator Appreciation Day
Annual observance for IT workers
World Kindness Day
International observance on 13 November