Day of Remembrance for all Victims of Chemical Warfare
OPCW C-20/DEC.10
For 2026, these source-backed observances resolve to Monday, November 30. Recurring rules can move in another year, so each record keeps its own date logic.
A reviewed starting point drawn from prominent global observances with strong institutional or organizer provenance. Selection does not change each record’s official status or scope.
OPCW C-20/DEC.10
Philippine Presidential proclamation and Republic Act 8491
Employment New Zealand’s 2026 anniversary table lists the Chatham Islands actual and observed anniversary date as 30 November.
UAE government sources state that Commemoration Day is observed annually on 30 November to honor those who died in service to the nation
University cybersecurity guidance identifies Computer Security Day as an annual November 30 observance dating to 1988.
OPCW C-20/DEC.10
Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Barbados — Independence Day on 30 November. The source verifies the diplomatic national-day…
National Day Calendar lists National Mississippi Day on 30 November. The U.S. Senate records Mississippi’s admission/statehood date as 10 December 1817. The two dates are deliberately kept…
Two Association of Nutrition & Foodservice Professionals chapter calendars from different publication years list National Mousse Day on 30 November.
The Scottish Government’s bank-holiday calendar lists St Andrew’s Day on 30 November 2026; past calendars show substitute bank-holiday dates can apply when the date falls on a weekend.
This page is assembled from verified fixed dates, reusable recurrence rules, and target-year records whose edition matches 2026. Variable, historical or unresolved records are not silently forced onto this date.
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