Civic Public Life observances

Sinai Liberation Day

25 April annually · Egypt / national Sinai liberation commemoration

Egypt’s State Information Service states that the anniversary of Sinai Liberation is commemorated on April 25 each year; the 2026 presidential address marked the 44th anniversary.

Solomon Islands Independence Day

7 July · Solomon Islands

Somalia Independence Day

1 July annually · Somalia / national independence commemoration

Somalia’s Ministry of Foreign Affairs states that Somalia celebrates Independence Day every year on 1 July, also marking the union of the northern and southern regions in 1960.

Southland Anniversary Day

Observed Tuesday 7 April 2026; actual anniversary 17 January · Southland, New Zealand / Employment New Zealand 2026 guidance

Employment New Zealand’s 2026 table lists Southland’s actual anniversary as 17 January and the observed date as Tuesday 7 April 2026.

Soviet Occupation Day (Georgia)

25 February annually; 25 February 2026 current commemoration · Georgia / national remembrance

Georgia’s Ministry of Foreign Affairs states that 25 February was officially designated Soviet Occupation Day by a resolution of Parliament.

Spirit of ’45 Day

Second Sunday in August; 9 August in 2026 · United States / World War II generation commemoration

A U.S. congressional concurrent resolution supports observance of Spirit of ’45 Day on the second Sunday in August

Sports Day

Second Monday in October; 12 October 2026 · Japan / statutory national holiday

Japan’s Act on National Holidays names Sports Day and sets it on the second Monday in October.

Sretenje — Serbian Statehood Day

15 February annually · Serbia / national holiday

The Serbian Government identifies 15 February as Serbian Statehood Day (Sretenje), commemorating the 1804 uprising and 1835 constitution.

State Inauguration Day

1 December · Nagaland statehood/inauguration commemoration; historically listed as a state general holiday

Government of Nagaland

Statehood Day

25 June · Slovenia / national holiday

The Government of Slovenia lists June 25 as Statehood Day among national holidays and explains that it commemorates the June 25, 1991 statehood decisions associated with independence.

Statehood Day of Arunachal Pradesh

20 February · Arunachal Pradesh, India

Statehood Day of Montenegro

13 July annually · Montenegro / national statehood observance

The Government of Montenegro identifies July 13 as Statehood Day and explains the date as a symbol of Montenegrin statehood.

Stonewall Uprising anniversary

28 June anniversary of the uprising’s beginning in 1969 · United States / Stonewall National Monument historical commemoration

The National Park Service states that the Stonewall uprising began in the early hours of 28 June 1969 and continued for several nights.

Sámi National Day

6 February annually · Sámi / Sápmi; official flag-day recognition in Norway

Norwegian government sources identify 6 February as Sámi National Day; Norway also recognizes it as an official flag day, with the date recalling the first Sámi congress in Trondheim in 191…

Taranaki Anniversary Day

Observed Monday 9 March 2026; actual anniversary 31 March · Taranaki, New Zealand / Employment New Zealand 2026 guidance

Employment New Zealand’s 2026 table lists Taranaki’s actual anniversary as 31 March and its observed date as Monday 9 March 2026.

Tax Day / federal individual income tax filing deadline

Usually 15 April in the United States, subject to calendar and legal exceptions · United States federal individual income tax filing context

IRS material uses “Tax Day” for the federal individual income tax filing deadline and notes that circumstances can move the practical deadline

Temotu Province public holiday

8 June 2026 · Temotu Province, Solomon Islands / 2026 provincial public holiday

The Solomon Islands Gazette No. 157 appoints 8 June as the Temotu Province public holiday for 2026.

Territory Day

1 July annually · Northern Territory, Australia / civic self-government celebration

The Northern Territory’s official Territory Day site says Territory Day is celebrated every year on 1 July and links the date to the start of Northern Territory self-government in 1978.

Throne Day

30 July · Morocco national royal commemoration

Official Kingdom of Morocco portal

Trinidad and Tobago Independence Day

31 August · Trinidad and Tobago

The Organization of American States’ current country page lists Trinidad and Tobago National Independence Day as 31 August.

Triumph of the Sandinista Popular Revolution

19 July · Nicaragua / national commemoration of the 1979 Sandinista Revolution

Nicaragua’s official gazette and National Assembly materials identify 19 July as the anniversary of the Triumph of the Sandinista Popular Revolution, tied to the 1979 overthrow of the Somoz…

U.S. Air Force Reserve Birthday

14 April · United States / Air Force Reserve

Air Force Reserve Command materials mark 14 April 2026 as the Air Force Reserve’s 78th anniversary.

U.S. Army Birthday

14 June · United States / U.S. Army

The U.S. Army’s official 2026 birthday page identifies 14 June 2026 as the Army’s 251st birthday.

U.S. Army Reserve Birthday

23 April · United States / U.S. Army Reserve

The U.S. Army Reserve’s official birthday page identifies 23 April 2026 as its 118th birthday.

U.S. Navy Birthday

13 October annually · United States / U.S. Navy anniversary

Naval History and Heritage Command identifies 13 October as the date celebrated as the U.S. Navy’s birthday.

UAE National Day

2 December · United Arab Emirates

The UAE Government’s official public-holidays page states that UAE National Day falls on 2 December and marks the federal unification in 1971; its current holiday listing also covers the Na…

Uganda Martyrs Day

3 June annually; 2026 public celebrations were postponed · Uganda / national religious holiday and commemoration

Uganda’s State House describes Uganda Martyrs Day as a national religious holiday observed every year on 3 June; in 2026 the government postponed public celebrations because of Ebola-outbre…

Uncle Sam Day in the State of New York

13 September · New York State, United States / statutory commemorative day

New York Executive Law §168-a expressly lists September 13 as Uncle Sam Day in the State of New York.

Unification of Prekmurje Slovenes with the Mother Nation

17 August · Slovenia / national holiday that is not work-free

Slovenia’s government lists 17 August as Unification of Prekmurje Slovenes with the Mother Nation and explicitly identifies it among national holidays that are not work-free days.

Union State Day / Day of Unity of the Peoples of Belarus and Russia

2 April · Belarus–Russia Union State — intergovernmental observance

Official Union State portal material stating the day is celebrated annually on 2 April

United Nations Day

24 October · United Nations / international observance

A/RES/168 (II)

United Nations Day for South-South Cooperation

12 September · United Nations / international observance

A/RES/58/220

United Nations International Day in Support of Victims of Torture

26 June · United Nations / international observance

A/RES/52/149

United States Marine Corps Birthday

10 November annually · United States Marine Corps / worldwide Marine Corps community

Official U.S. Marine Corps material states that Marines around the world celebrate the birth of the Marine Corps each year on November 10.

Unity Day

Tuesday following Heroes Day · Zambia / public holiday rule

Zambia’s Public Holidays Act schedules Unity Day for the Tuesday following Heroes Day; the government can alter particular holiday dates by Gazette, as shown by official notices.

Unity Day

22 December 2026 in the current government holiday calendar · Zimbabwe / 2026 government holiday calendar

Zimbabwe Republic Police’s current government calendar lists Unity Day on 22 December 2026.

USS Maine sinking anniversary

15 February · United States / Spanish-American War historical remembrance

The Smithsonian records that USS Maine sank in Havana Harbor on the evening of 15 February 1898.

Venezuela Independence Day

5 July · Venezuela

The Organization of American States’ current country page lists Venezuela National Independence Day as 5 July.

Victoria Day

Monday preceding 25 May; 18 May 2026 · Canadian statutory holiday and official observance of the Sovereign’s birthday

Canadian Heritage, Government of Canada

Victory Day

23 June annually · Estonia / public holiday and day of rest

Estonia’s Public Holidays and Days of National Importance Act lists 23 June as Victory Day and a public holiday/day of rest.

Victory Day

Second Monday in August; 10 August 2026 · Rhode Island, United States / state holiday

The Rhode Island Secretary of State lists Victory Day as a Rhode Island state holiday on the second Monday in August and gives 10 August for 2026.

Victory of the Islamic Revolution in Iran

11 February · Iran

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Iran — Victory of the Islamic Revolution in Iran on 11 February. The source verifies the di…

Virgin Islands Day

6 July 2026 · British Virgin Islands / territorial public holiday

The Government of the Virgin Islands’ Cabinet-approved 2026 public-holiday calendar lists Virgin Islands Day on Monday 6 July 2026.

Waitangi Day

6 February · New Zealand national public holiday and Treaty commemoration

Waitangi Day Act 1976; New Zealand Government

War on Poverty Day

8 January · United States / informal historical-policy commemoration

National Today lists War on Poverty Day on January 8; the LBJ Presidential Library independently preserves President Lyndon Johnson’s January 8, 1964 State of the Union in which he declared…

Washington’s Birthday (federal designation; “Presidents’ Day” is a common alternative label)

Third Monday in February · United States federal holiday; common “Presidents’ Day” label reconciled to the federal legal name

U.S. Office of Personnel Management / 5 U.S.C. 6103

Wellington Anniversary Day

Observed Monday 19 January 2026; actual anniversary 22 January · Wellington, New Zealand / Employment New Zealand 2026 guidance

Employment New Zealand’s 2026 anniversary table lists Wellington’s actual anniversary as 22 January and the observed date as Monday 19 January 2026.

Western Australia Day

First Monday in June under current arrangements; 1 June 2026 · Western Australian state public holiday

Government of Western Australia; Western Australia Day (Renaming) Act 2012

World Cities Day

31 October · United Nations / international observance

A/RES/68/239

World Development Information Day

24 October · United Nations / international observance

A/RES/3038 (XXVII)

Yom HaAtzmaut (Israel Independence Day)

22 April 2026 in the current Israeli diplomatic calendar · Israel / national independence observance

Israeli Ministry of Foreign Affairs calendars list Yom HaAtzmaut / Israel Independence Day on 22 April 2026, and the President’s Office marked Israel’s 78th Independence Day on that date.