2015
First observance
Commemoration Day
Dubai Customs contemporaneously described its 2015 ceremony as the UAE’s first Commemoration Day, and WAM published official leadership statements for that first observance.
Evergreen date guide
What is celebrated on November 30?
See the observances and verified observance-history milestones attached to November 30. Each observance keeps its own source and date details.
Verified history
Today in history →On this date in observance history
Selected observance milestones connected to this date, based on reviewed sources.
2011
Later action
Day of the Seafarer
The IMO Assembly formally established 25 June each year as the Day of the Seafarer after recalling the 2010 Manila Conference decision and the successful first 2011 celebration.
1981
Institutional decision
International Day of Peace
UN General Assembly resolution tables and the A/RES/36/67 institutional record identify adoption at the 77th plenary meeting on 30 November 1981.
Curated global anchors
See the collection →Major global guides on November 30
A reviewed starting point drawn from prominent global observances with strong institutional or organizer sources. Each observance keeps its own documented status and scope.
Source-backedFixed AnnualIn-depth guide
Day of Remembrance for all Victims of Chemical Warfare
OPCW C-20/DEC.10
Reviewed depth
Other in-depth guides on November 30
Source-backedEdition SpecificIn-depth guide
Bonifacio Day
Act No. 2946 made 30 November a legal holiday in 1921; later national holiday law retains Bonifacio Day while Republic Act No. 9492 permits movable observance, and Proclamation No. 1006 set…
Source-backedFixed AnnualIn-depth guide
Commemoration Day
Current UAE government sources identify November 30 as Commemoration Day and state that President Sheikh Khalifa bin Zayed Al Nahyan declared the observance in 2015 in remembrance of Salem…
Source-backedFixed AnnualIn-depth guide
Computer Security Day
University cybersecurity guidance identifies Computer Security Day as an annual November 30 observance dating to 1988.
Source-backedFixed AnnualIn-depth guide
Independence Day
Barbados Parliament states that Independence Day is celebrated on 30 November and that Barbados became independent on 30 November 1966. The Barbados Independence Order 1966 came into operat…
Source-backedFixed AnnualIn-depth guide
National Mississippi 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…
Explore the mix
All topics →Topics represented on November 30
6 observances
All observances on this date
Source-backedEdition SpecificIn-depth guide
Bonifacio Day
Act No. 2946 made 30 November a legal holiday in 1921; later national holiday law retains Bonifacio Day while Republic Act No. 9492 permits movable observance, and Proclamation No. 1006 set…
Source-backedFixed AnnualIn-depth guide
Commemoration Day
Current UAE government sources identify November 30 as Commemoration Day and state that President Sheikh Khalifa bin Zayed Al Nahyan declared the observance in 2015 in remembrance of Salem…
Source-backedFixed AnnualIn-depth guide
Computer Security Day
University cybersecurity guidance identifies Computer Security Day as an annual November 30 observance dating to 1988.
Source-backedFixed AnnualIn-depth guide
Day of Remembrance for all Victims of Chemical Warfare
OPCW C-20/DEC.10
Source-backedFixed AnnualIn-depth guide
Independence Day
Barbados Parliament states that Independence Day is celebrated on 30 November and that Barbados became independent on 30 November 1966. The Barbados Independence Order 1966 came into operat…
Source-backedFixed AnnualIn-depth guide
National Mississippi 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…
How dates are selected
This page combines fixed annual dates, reusable calendar rules and year-specific dates confirmed for 2026. Variable or historical dates are included only when they are clearly supported.
Read the methodology →