World Smallpox Eradication Day

Occurrence:
2X
Hashtags:
References:
who.int/…/commemorating-the-40th-anniversary-of-smallpox-eradica…
x.com/StoryWonker/status/1336763552418422785
x.com/windbarb/status/994024466068983808

World Smallpox Eradication Day takes place twice annually, on May 8th and on December 9th.