Civic, Remembrance & History observances

Hawaiian Flag Day (Lā Hae Hawaiʻi)

31 July · Hawaiʻi / Hawaiian flag commemoration supported by 1989 state legislative resolutions

Hawaiʻi HCR 185 H.D. 1 requested July 31 be designated “Lā Hae Hawaiʻi” as Hawaiian Flag Day; the companion House resolution used the same date and name.

Hawke’s Bay Anniversary Day

Actual anniversary date 1 November; observed Friday 23 October in 2026 · Hawke’s Bay, New Zealand / provincial anniversary observance

Employment New Zealand’s 2026 table lists Hawke’s Bay’s actual anniversary date as 1 November and the observed date as Friday 23 October, following the Friday-before-Labour-Day convention.

Herbert Hoover Day

Sunday on or nearest 10 August · Iowa state commemorative day, United States

Iowa Code §1C.8

Heritage Day

24 September · South Africa

South African Government lists Heritage Day as a public holiday and describes its purpose around cultural wealth, diversity and living heritage

Heritage Day

First Monday in August; 3 August 2026 · Alberta, Canada / optional general holiday

The Government of Alberta lists Heritage Day on the first Monday in August and identifies it as an optional general holiday rather than one of Alberta’s statutory general holidays.

Heritage Day

20 February 2026 · Yukon, Canada / territorial cultural observance

Yukon’s employment-standards page lists Heritage Day on 20 February 2026 and explicitly says it is not a Yukon statutory holiday.

Heroes and Foreparents Day

Third Monday in October; 19 October 2026 · British Virgin Islands / territorial public holiday

Virgin Islands government material says the observance began in 2021 and is observed every third Monday of October; the 2026 Cabinet calendar names it Heroes and Foreparents Day on 19 Octob…

Heroes’ Day

9 June; confirmed in current Uganda government commemorations · Uganda / national civic commemoration

Uganda’s State House documents the national Heroes’ Day commemoration on 9 June, including the 37th Heroes Day commemoration in 2026.

Heroes’ Day / National Heroes Day (jurisdiction-dependent)

No universal date — jurisdiction required (for example Uganda: 9 June; The Bahamas: second Monday in October) · Multiple jurisdictions / distinct civic remembrance holidays sharing a similar English title

Uganda government sources identify Heroes’ Day on 9 June, while Bahamian public-holiday law defines National Heroes Day as the second Monday in October. These are distinct jurisdiction-spec…

Heroes’ Day of Zambia

Early July; confirm the current government holiday notice · Zambia

Hiroshima Peace Memorial Ceremony / 6 August remembrance

6 August annually; the 2026 ceremony was 6 August 2026 at 8:00 a.m. · Hiroshima City peace remembrance of atomic-bomb victims and appeal for nuclear abolition and lasting peace

Hiroshima City states that it holds the Peace Memorial Ceremony every year on 6 August and published the 2026 ceremony schedule.

His Majesty the Sultan and Yang Di-Pertuan of Brunei Darussalam’s Birthday

15 July 2026 · Brunei Darussalam / 2026 official holiday calendar

Brunei government foreign-service materials list the Sultan’s 80th Birthday on Wednesday 15 July 2026. The inherited “in lieu” wording is not applicable to the cited 2026 date itself.

HM Queen Sonja’s birthday — Norwegian official flag day

4 July under the cited Norwegian flag regulation · Norway official flag-day calendar

Norway’s official flag regulations list 4 July, HM Queen Sonja’s birthday, among official flag days; the Royal Court records Queen Sonja’s birth date as 4 July 1937.

Holocaust Martyrs’ and Heroes’ Remembrance Day (Yom HaShoah)

14 April 2026; official state opening on the evening of 13 April · Israel / national Holocaust remembrance observance

The President of Israel addressed the official state opening ceremony on 13 April 2026, beginning the 2026 Holocaust Martyrs’ and Heroes’ Remembrance Day observance.

Holocaust Memorial Day

27 January annually · United Kingdom / national Holocaust remembrance

UK government material marks Holocaust Memorial Day annually on 27 January, the anniversary of the liberation of Auschwitz-Birkenau.

Hong Kong Special Administrative Region Establishment Day

1 July annually; 2026 and 2027 government calendars verified · Hong Kong SAR / general holiday and establishment anniversary

Hong Kong government holiday notices list Hong Kong Special Administrative Region Establishment Day on 1 July; the Chief Executive’s 2026 remarks identify 1 July 2026 as the 29th establishm…

Humane Society of the United States founding anniversary

Historical founding date: 22 November 1954 · United States / organizational-history anniversary of the Humane Society of the United States, now Humane World for Animals

The organization’s incorporation record states that the Humane Society of the United States was originally incorporated on November 22, 1954; its own anniversary history also identifies Nov…

Hung Kings Commemoration Day (Giỗ Tổ Hùng Vương)

26 April 2026 (10th day of the 3rd lunar month); 2026 holiday period 25–27 April · Vietnam / 2026 national commemoration and holiday period

Vietnamese local-government holiday notices identify the 2026 Hung Kings Commemoration ceremony on 26 April, corresponding to the 10th day of the third lunar month, with a 25–27 April holid…

Hungary’s national holidays

15 March, 20 August and 23 October; 20 August is the official state holiday · Hungary / constitutional national-holiday framework

Hungary’s Fundamental Law identifies 15 March, 20 August and 23 October as national holidays and states that 20 August is the official state holiday.

Ilinden – Republic Day

2 August annually · North Macedonia / national holiday

A North Macedonian government ministry identifies 2 August as Ilinden – Republic Day in its official holiday message.

Implantação da República

5 October · Portugal / national republic commemoration and holiday

The Government of Portugal scheduled the official 115th anniversary commemoration of the Implantação da República for 5 October 2025; the government holiday register lists 5 October under t…

Inauguration Day

20 January every fourth year following a presidential election for the federal holiday rule; next such holiday after 2025 is 20 January 2029 · U.S. presidential inauguration and limited Washington-area federal holiday rule

The U.S. Office of Personnel Management explains that Inauguration Day is a legal holiday for qualifying federal employees in the Washington, DC area on 20 January every fourth year after 1…

Independence and Unity Day

26 December annually · Slovenia / national holiday

The Government of Slovenia states that Independence and Unity Day is celebrated every year on 26 December, marking the announcement of the 1990 independence plebiscite results.

Independence anniversary of Seychelles

29 June; 50th anniversary in 2026 · Seychelles / national independence anniversary

State House Seychelles identifies 29 June 1976 as the date Seychelles attained independence and describes 2026 as the 50th Independence anniversary.

Independence Day

19 August · Afghanistan

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Afghanistan — Independence Day on 19 August. The source verifies the diplomatic national-da…

Independence Day

28 November · Albania

The official museum visitor calendar identifies 28 November as Independence Day.

Independence Day

5 July · Algeria

The 2026 foreign-affairs page identifies 5 July as Algeria’s 64th Independence Day and connects it to the 5 July 1962 proclamation of independence.

Independence Day

21 September · Armenia

The Government of Armenia’s Independence Day message is dated 21 September and explicitly identifies the occasion as Republic of Armenia Independence Day.

Independence Day

10 July · The Bahamas

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists The Bahamas — Independence Day on 10 July. The source verifies the diplomatic national-day…

Independence Day

30 November · Barbados

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…

Independence Day

6 August · Bolivia

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Bolivia — Independence Day on 6 August. The source verifies the diplomatic national-day ide…

Independence Day

30 September · Botswana

Government of Botswana material identifies 30 September as Botswana Independence Day.

Independence Day

7 September · Brazil

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Brazil — Independence Day on 7 September. The source verifies the diplomatic national-day i…

Independence Day

1 July annually · Burundi / national public holiday

Burundi’s Ministry of Foreign Affairs lists Independence Day on 1 July, and the Presidency marked the 64th anniversary in 2026.

Independence Day

9 November · Cambodia

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Cambodia — Independence Day on 9 November. The source verifies the diplomatic national-day…

Independence Day

11 August annually · Chad / national independence commemoration

A current Chadian government ministry Independence Day message identifies 11 August as the anniversary of Chad’s independence in 1960.

Independence Day

15 August · Republic of the Congo

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Congo, Republic of — Independence Day on 15 August. This verifies the current diplomatic id…

Independence Day

15 September · Costa Rica

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Costa Rica — Independence Day on 15 September. The source verifies the diplomatic national-…

Independence Day

1 October · Cyprus

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Cyprus — Independence Day on 1 October. The source verifies the diplomatic national-day ide…

Independence Day

27 June · Djibouti

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Djibouti — Independence Day on 27 June. The source verifies the diplomatic national-day ide…

Independence Day

27 February · Dominican Republic

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Dominican Republic — Independence Day on 27 February. The source verifies the diplomatic na…

Independence Day

15 September · El Salvador

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists El Salvador — Independence Day on 15 September. The source verifies the diplomatic national…

Independence Day

12 October · Equatorial Guinea

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Equatorial Guinea — Independence Day on 12 October. The source verifies the diplomatic nati…

Independence Day

24 May · Eritrea

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Eritrea — Independence Day on 24 May. The source verifies the diplomatic national-day ident…

Independence Day

24 February · Estonia

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Estonia — Independence Day on 24 February. The source verifies the diplomatic national-day…

Independence Day

6 December · Finland

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Finland — Independence Day on 6 December. The source verifies the diplomatic national-day i…

Independence Day

28 May annually · Azerbaijan / national holiday

Azerbaijan’s 2021 law names 28 May Independence Day, commemorating the 1918 declaration by the Azerbaijan Democratic Republic; the presidential holiday register uses the current Independenc…

Independence Day

18 February annually; 18 February 2026 verified · The Gambia / national independence day

The Government of The Gambia lists Independence Day on February 18, and the Office of the President marked the 61st Independence Day anniversary on February 18, 2026.

Independence Day

26 May · Georgia

A 26 May 2026 ministry page explicitly documents Georgia’s Independence Day celebrations.

Independence Day

6 March · Ghana

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Ghana — Independence Day on 6 March. The source verifies the diplomatic national-day identi…

Independence Day

25 March · Greece

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Greece — Independence Day on 25 March. The source verifies the diplomatic national-day iden…

Independence Day

7 February · Grenada

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Grenada — Independence Day on 7 February. The source verifies the diplomatic national-day i…

Independence Day

15 September · Guatemala

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Guatemala — Independence Day on 15 September. The source verifies the diplomatic national-d…

Independence Day

1 October · Guinea

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Guinea — Independence Day on 1 October. The source verifies the diplomatic national-day ide…

Independence Day

15 September · Honduras

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Honduras — Independence Day on 15 September. The source verifies the diplomatic national-da…

Independence Day

26 March · Bangladesh

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Bangladesh — Independence Day on 26 March. The source verifies the diplomatic national-day…

Independence Day

15 August · India

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists India — Independence Day on 15 August. The source verifies the diplomatic national-day iden…

Independence Day

25 May · Jordan

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Jordan — Independence Day on 25 May. The source verifies the diplomatic national-day identi…

Independence Day

17 February · Kosovo

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Kosovo — Independence Day on 17 February. The source verifies the diplomatic national-day i…

Independence Day

31 August · Kyrgyz Republic

The current agency news register records “Happy Independence Day of the Kyrgyz Republic!” on 31 August 2026.

Independence Day

22 November · Lebanon

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Lebanon — Independence Day on 22 November. The source verifies the diplomatic national-day…

Independence Day

4 October · Lesotho

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Lesotho — Independence Day on 4 October. The source verifies the diplomatic national-day id…

Independence Day

21 September · Malta

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Malta — Independence Day on 21 September. The source verifies the diplomatic national-day i…

Independence Day

25 June · Mozambique

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Mozambique — Independence Day on 25 June. The source verifies the diplomatic national-day i…

Independence Day

21 March · Namibia

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Namibia — Independence Day on 21 March. The source verifies the diplomatic national-day ide…

Independence Day

31 January; 2026 government holiday calendar confirmed · Nauru / national independence and public holiday

Nauru’s Constitution defines Independence Day by reference to January 31, 1968, and the Government Gazette lists January 31, 2026 as Independence Day in the public-holiday calendar.

Independence Day

1 October · Nigeria

The Nigerian government trade portal lists 1 October 2026 as Independence Day and states that it commemorates independence in 1960.

Independence Day

16 September · Papua New Guinea

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Papua New Guinea — Independence Day on 16 September. The source verifies the diplomatic nat…

Independence Day

28 July · Peru

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Peru — Independence Day on 28 July. The source verifies the diplomatic national-day identit…

Independence Day

12 June · Philippines

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Philippines — Independence Day on 12 June. The source verifies the diplomatic national-day…

Independence Day

27 October 2026; government holiday calendar verified · Saint Vincent and the Grenadines / national holiday

The Government of Saint Vincent and the Grenadines Statistical Office calendar lists Independence Day on 27 October 2026 and notes closure for the national holiday.

Independence Day

1 June · Samoa

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Samoa — Independence Day on 1 June. The source verifies the diplomatic national-day identit…