general/may-observances
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International Day of the Midwife
International observance celebrating midwives
Aldersgate Day
Methodist commemorative day
Thargelia
Ancient Athenian religious festival
World AIDS Vaccine Day
Health awareness day
World Turtle Day
Annual observance
International Museum Day
Annual day highlighting the role of museums
World Laughter Day
Unofficial observance; May 10
Liberation Day (Channel Islands)
Public holiday in Jersey
Geek Pride Day
Commemorative day
International Masturbation Month
Commeration for sex-positivity in May
International Day of United Nations Peacekeepers
Annual tribute to United Nations Peacekeeping personnel