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Flag Days of April

Last modified: 2026-04-18 by rob raeside
Keywords: flag days |
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Days of April

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30

See also:

• Flag Days of the World (main page)

1

• Cyprus - Liberation Struggle Anniversary, 1955
• Denmark - Maundy Thursday (varies: thursday before Easter)
• Iran - Islamic Republic Day, 1979
• Mauritania
  by Željko Heimer, colours corrected by António Martins
  - Flag Day, 1959

2

• Argentina - War Veterans' Day
• Azores
  by Graham Bartram, António Martins, and Jorge Candeias
  - Flag Day, 1979
• Denmark - Battle of Copenhagen, 1659
• Denmark - Good Friday (half staff; varies: Friday before Easter)
• Iceland - Good Friday (half staff; varies: Friday before Easter)

3

• Guinea - Second Republic Day, 1984

4

• - Easter (varies: Sunday 22 March - 25 April)
  • Denmark
  • Iceland
  • Norway
  • Sweden
• Hungary - Liberation Day, 1945
• Monaco
  byAntónio Martins
  - Flag Day, 1881
• Senegal - Independence Day
• NATO - Treaty Signing Anniversary, 1949

[5]

6

• Ethiopia - Liberation Day, 1941
• Sudan - April Revolution, 1985
• Thailand - Chakri Dynasty Day, 1782
• USA - Army Day

7

• Albania
  by Carlos Esparza
  - Flag Day, 1912
• Armenia - Mother's Day
• Belgium - Peacekeepers' Memorial Day
• Liberia - World Health Day
• Rwanda - Day of National Mourning
• United Nations - World Health Day

[8]

9

• Denmark - Occupation, 1940 (half staff until 12.02)
• Finland - Mikael Agricola's Birthday, 1508
• Georgia - Day of National Unity, 1991
• Philippines - Bataan Day, 1945
• Tunisia - Martyr's Day
• UK - His Majesty's Wedding Day
• USA - National Former-prisoner-of-war Recognition Day

[10]

11

• Costa Rica - Battle of Rivas Day, 1856
• Uganda - Liberation Day, 1979

12

• Bedfordshire, England - Anniversary of the Granting of Arms
  
  

13

• USA - Thomas Jefferson's Birthday (unofficial), 1743

14

• Organization of American States - Pan-American Day, 1890

15

• Maine, USA - Patriot's Day (varies)
• North Korea - Kim Il Sung's Birthday, 1912

16

• Luxembourg - Birthday of Grand Duke Henri of Luxembourg
• Orkney, Scotland - St. Magnus Day

17

• American Samoa - Flag Day
• Syria - Independence Day, 1946

18

• Denmark - Battle of Dybbøl, 1864
• Israel - Holocaust Memorial Day (half mast; varies: 27 Nisan in the Hebrew calender)
• Zimbabwe - Independence Day, 1980

19

• Massachusetts, USA - Battle of Lexington and Concord, 1775
• Sierra Leone - Republic Day, 1971
• eSwatini - King's Birthday
• Uruguay - Return of the 33 Exiles, 1825
• Venezuela - Declaration of Independence, 1810

20

• Venezuela
  by Željko Heimer
  - Flag Day, 1836

21

• Brazil - Tiradentes Day, 1792
• Texas, USA - Battle of San Jacinto, 1836
• Vatican - Death of the previous pope (half-staff)

22

• Brazil - Discovery Day, 1500
• Iceland - First Day of Summer (varies: Thursday 19 - 25 April)
• Oklahoma, USA - Oklahoma Day, 1889
• Spain - Queen Isabella Day, 1451
• World - Earth Day, 1970

23

• England, UK - St. George's Day
• Turkey - Independence Day, 1920

24

• Armenia - Genocide Memorial Day, 1915
• Gambia - Constitution Day, 1970

25

• Australia - ANZAC Day
• Egypt - Sinai Liberation Day, 1982
• Faroe Islands
  by Mark Sensen
  - Flag Day, 1948
• Huntingdonshire, England - Birth-date of Oliver Cromwell
• Israel - IDF memorial day (half mast; varies: 4 Iyar in the Hebrew calender)
• Italy - Liberation Day, 1945
• New Zealand - ANZAC Day
• Portugal - Revolution Anniversary, 1974
• eSwatini
  
  - Flag Day
• Tonga - ANZAC Day

26

• Israel - Independence Day, 14 may 1948 (varies: 5 Iyar in the Hebrew calendar)
• Tanzania - Union Day, 1961
• USA - Arbor Day (varies)

27

• Afghanistan - Saur Revolution Day, 1978
• Finland - National Veterans' Day
• The Netherlands - King William Alexander's Birthday: King's Day (Koningsdag)
• Sierra Leone - Independence Day, 1960
• Slovenia - National Resistance Day (World War II)
• South Africa - Freedom Day, 1994
• Togo - Independence Day, 1960

28

• Åland Islands
  by Jan Oskar Engene
  - Flag Day, 1954
• Maryland, USA - Ratification Day, 1788

29

• Denmark - Princess Bendikte's Birthday, 1944
• Japan - Greenery Day

30

• Denmark - Great Prayer Day (varies: fourth Friday after Easter)
• Louisiana, USA - Admission Day, 1812
• Sweden - King Carl XVI Gustaf's Birthday, Konungens födelsedag, 1946
• Vietnam - Saigon Liberation Day, 1975

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