There is a total of 216 public holidays and observances in September of 2020 for over 230 countries and 3300 locations around the world. In the table below, you will find the details of the holidays & observances along with when and where they are observed.

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Date Holiday Location
Tuesday, September 1, 2020 Kirani Day
Grenada
Tuesday, September 1, 2020 World Peace Day
Germany
Tuesday, September 1, 2020 Independence Day
Uzbekistan
Tuesday, September 1, 2020 Constitution Day
Slovakia
Tuesday, September 1, 2020 Day of Knowledge
Russia
Tuesday, September 1, 2020 Indra Jatra
Nepal
Tuesday, September 1, 2020 Knowledge and Literature Day
Armenia
Tuesday, September 1, 2020 Commencement Day of Eritrean Armed Struggle
Eritrea
Tuesday, September 1, 2020 Binara Full Moon Poya Day
Sri Lanka
Wednesday, September 2, 2020 Madhu Purnima
Bangladesh
Wednesday, September 2, 2020 Hungry Ghost Festival
Hong Kong
Wednesday, September 2, 2020 Day of Saint Antolín
Spain
Wednesday, September 2, 2020 Day of the Independent City of Ceuta
Spain
Wednesday, September 2, 2020 Hungry Ghost Festival
Taiwan
Wednesday, September 2, 2020 Army Day
Nicaragua
Wednesday, September 2, 2020 Independence Day
Vietnam
Wednesday, September 2, 2020 Spirit Festival
China
Thursday, September 3, 2020 The Feast of St Marinus and Republic Day
San Marino
Thursday, September 3, 2020 Armed Forces Day
Taiwan
Thursday, September 3, 2020 Yamashita Surrender Day
Philippines
Friday, September 4, 2020 Labor Day
Marshall Islands
Friday, September 4, 2020 World Sexual Health Day
United States
Saturday, September 5, 2020 Mother Teresa Beatification Day
Albania
Saturday, September 5, 2020 International Day of Charity
United States
Sunday, September 6, 2020 Father's Day
New Zealand
Sunday, September 6, 2020 Defence Day
Pakistan
Sunday, September 6, 2020 Somhlolo Day (Independence Day)
eSwatini
Sunday, September 6, 2020 Father's Day
Australia
Sunday, September 6, 2020 Unification Day
Bulgaria
Sunday, September 6, 2020 Armed Forces' Day
Sao Tome and Principe
Monday, September 7, 2020 Labour Day
Bermuda
Monday, September 7, 2020 Independence Day
Brazil
Monday, September 7, 2020 Unification Day observed
Bulgaria
Monday, September 7, 2020 Labor Day
United States
Monday, September 7, 2020 Umhlanga Reed Dance
eSwatini
Monday, September 7, 2020 Labour Day
Canada
Monday, September 7, 2020 Constitution Day
Fiji
Monday, September 7, 2020 Labor Day
Palau
Monday, September 7, 2020 Victory Day
Mozambique
Monday, September 7, 2020 Civil Service Day
Nepal
Monday, September 7, 2020 Labor Day
Guam
Monday, September 7, 2020 Faro Day
Portugal
Tuesday, September 8, 2020 Independence Day
North Macedonia
Tuesday, September 8, 2020 Nativity of Our Lady
Liechtenstein
Tuesday, September 8, 2020 Nativity of Mary
Lebanon
Tuesday, September 8, 2020 Feast of the Nativity of Mary
Philippines
Tuesday, September 8, 2020 Victory Day
Spain
Tuesday, September 8, 2020 Kosrae Liberation Day
Micronesia
Tuesday, September 8, 2020 Feast of Our Lady of the Cinta
Spain
Tuesday, September 8, 2020 Virgin of the Plains
Spain
Tuesday, September 8, 2020 Festival of Virgin of Guadalupe
Spain
Tuesday, September 8, 2020 International Literacy Day
United States
Tuesday, September 8, 2020 Feast of Virgin of the Antigua
Spain
Tuesday, September 8, 2020 Day of Asturias
Spain
Tuesday, September 8, 2020 Day of Extremadura
Spain
Tuesday, September 8, 2020 The Feast of Our Lady of Victories
Malta
Tuesday, September 8, 2020 Day of Our Lady of San Lorenzo
Spain
Tuesday, September 8, 2020 Day of the Virgin of the Vega
Spain
Tuesday, September 8, 2020 National Day
Andorra
Tuesday, September 8, 2020 Virgin of the Victory
Spain
Wednesday, September 9, 2020 Children's Day
Costa Rica
Wednesday, September 9, 2020 Martyrs and Ahmad Shah Masoud Day
Afghanistan
Wednesday, September 9, 2020 Independence Day
Tajikistan
Wednesday, September 9, 2020 National Day
North Korea
Wednesday, September 9, 2020 Day of the Victims of Holocaust and of racial violence
Slovakia
Wednesday, September 9, 2020 California Admission Day
United States
Thursday, September 10, 2020 St. George's Caye Day
Belize
Thursday, September 10, 2020 Jitiya
Nepal
Thursday, September 10, 2020 Repression Victims' Day
Mongolia
Thursday, September 10, 2020 Children's Day
Honduras
Thursday, September 10, 2020 Teachers' Day
China
Thursday, September 10, 2020 World Suicide Prevention Day
United States
Thursday, September 10, 2020 Jeune Genevois
Switzerland
Thursday, September 10, 2020 Gibraltar Day
Gibraltar
Friday, September 11, 2020 Our Lady of Coromoto
Venezuela
Friday, September 11, 2020 Pohnpei Liberation Day
Micronesia
Friday, September 11, 2020 Ethiopian New Year
Ethiopia
Friday, September 11, 2020 Day of Catalonia
Spain
Friday, September 11, 2020 Geez New Year
Eritrea
Friday, September 11, 2020 Nayrouz
Egypt
Friday, September 11, 2020 Patriot Day
United States
Saturday, September 12, 2020 International Programmers' Day
United States
Saturday, September 12, 2020 International Day for South-South Cooperation
United States
Saturday, September 12, 2020 Knabenschiessen
Switzerland
Saturday, September 12, 2020 Carl Garner Federal Lands Cleanup Day
United States
Saturday, September 12, 2020 Day of the Workers in the Energy Sector
Turkmenistan
Saturday, September 12, 2020 German Language Day
Germany
Sunday, September 13, 2020 European Heritage Days
Germany
Sunday, September 13, 2020 National Grandparents Day
United States
Sunday, September 13, 2020 Knabenschiessen
Switzerland
Sunday, September 13, 2020 Fathers' Day
North Macedonia
Monday, September 14, 2020 Knabenschiessen
Switzerland
Monday, September 14, 2020 Boston Marathon
United States
Monday, September 14, 2020 Battle of San Jacinto
Nicaragua
Tuesday, September 15, 2020 Pilgrimage of the Virgin of Fuensanta
Spain
Tuesday, September 15, 2020 Independence Day
Nicaragua
Tuesday, September 15, 2020 Restoration of Primorska to the Motherland Day
Slovenia
Tuesday, September 15, 2020 Day of Our Lady of Sorrows
Slovakia
Tuesday, September 15, 2020 Independence Day
Guatemala
Tuesday, September 15, 2020 Shout of Dolores
Mexico
Tuesday, September 15, 2020 International Day of Democracy
United States
Tuesday, September 15, 2020 Independence Day
El Salvador
Tuesday, September 15, 2020 Birth of Bocage
Portugal
Tuesday, September 15, 2020 Nuestra Señora de la Bien Aparecida
Spain
Tuesday, September 15, 2020 Independence Day
Honduras
Wednesday, September 16, 2020 National Heroes Day
Saint Kitts and Nevis
Wednesday, September 16, 2020 International Day for the Preservation of the Ozone Layer
United States
Wednesday, September 16, 2020 Martyrs' Day
Libya
Wednesday, September 16, 2020 Independence Day
Mexico
Wednesday, September 16, 2020 Malaysia Day
Malaysia
Thursday, September 17, 2020 Constitution Day and Citizenship Day
United States
Thursday, September 17, 2020 Day of Melilla
Spain
Thursday, September 17, 2020 National Hero Day
Angola
Thursday, September 17, 2020 Teacher's Day
Honduras
Thursday, September 17, 2020 Birthday of Crown Prince Tupouto'a-'Ulukalala
Tonga
Thursday, September 17, 2020 Mahalaya
Bangladesh
Friday, September 18, 2020 National POW/MIA Recognition Day
United States
Friday, September 18, 2020 National Day
Chile
Friday, September 18, 2020 Rosh Hashana Eve
Argentina
Friday, September 18, 2020 Air Force Birthday
United States
Friday, September 18, 2020 Day off for National Hero Day
Angola
Friday, September 18, 2020 Fair Friday
Spain
Saturday, September 19, 2020 Rosh Hashana
Argentina
Saturday, September 19, 2020 The Feast of Saint Januarius (Naples)
Italy
Saturday, September 19, 2020 Constitution Day
Nepal
Saturday, September 19, 2020 Independence Day
Saint Kitts and Nevis
Saturday, September 19, 2020 Rosh Hashana
Israel
Saturday, September 19, 2020 Foundation of the Slovak National Council Day
Slovakia
Saturday, September 19, 2020 National CleanUp Day
United States
Saturday, September 19, 2020 Army Day
Chile
Saturday, September 19, 2020 Rosh Hashana
United States
Saturday, September 19, 2020 Valentine's Day
Colombia
Saturday, September 19, 2020 Rosh Hashana
United Kingdom
Sunday, September 20, 2020 Rosh Hashana (Day 2)
Israel
Sunday, September 20, 2020 Second day of Rosh Hashana
Argentina
Sunday, September 20, 2020 German World Children's Day
Germany
Sunday, September 20, 2020 Swiss Federal Fast
Switzerland
Sunday, September 20, 2020 German World Children's Day
Germany
Monday, September 21, 2020 St. Matthew's Day
Portugal
Monday, September 21, 2020 Independence Day
Armenia
Monday, September 21, 2020 International Day of Peace
United States
Monday, September 21, 2020 Kwame Nkrumah Memorial Day
Ghana
Monday, September 21, 2020 Federal Fast Monday
Switzerland
Monday, September 21, 2020 Respect for the Aged Day
Japan
Monday, September 21, 2020 Independence Day
Malta
Monday, September 21, 2020 Gedaliah Fast
Israel
Monday, September 21, 2020 Independence Day
Belize
Tuesday, September 22, 2020 Emancipation Day
United States
Tuesday, September 22, 2020 Mauritius Day
Switzerland
Tuesday, September 22, 2020 Independence Day
Mali
Tuesday, September 22, 2020 September Equinox
American Samoa
Tuesday, September 22, 2020 Autumn Equinox
Japan
Tuesday, September 22, 2020 September Equinox
Puerto Rico
Wednesday, September 23, 2020 Thimphu Drubchoe (Thimphu only)
Bhutan
Wednesday, September 23, 2020 Blessed Rainy Day
Bhutan
Wednesday, September 23, 2020 Day of Saint Tecla
Spain
Wednesday, September 23, 2020 International Celebrate Bisexuality Day
United States
Wednesday, September 23, 2020 Saudi National Day
Saudi Arabia
Tuesday, September 22, 2020 September Equinox
Micronesia
Thursday, September 24, 2020 World Maritime Day
United States
Thursday, September 24, 2020 Independence Day (National Day)
Guinea-Bissau
Thursday, September 24, 2020 Constitutional Day
Cambodia
Thursday, September 24, 2020 Heritage Day
South Africa
Thursday, September 24, 2020 Saint Rupert's Day
Austria
Thursday, September 24, 2020 Almarhum Sultan Iskandar Hol Day
Malaysia
Thursday, September 24, 2020 Republic Day
Trinidad and Tobago
Thursday, September 24, 2020 Anniversary of the Failed Attack on Lomé
Togo
Thursday, September 24, 2020 Armed Forces Day
Peru
Thursday, September 24, 2020 Virgin of Mercy
Spain
Thursday, September 24, 2020 Our Lady of Las Mercedes
Dominican Republic
Thursday, September 24, 2020 New Caledonia Day
New Caledonia
Friday, September 25, 2020 Manit Day
Marshall Islands
Friday, September 25, 2020 Friday before the AFL Grand Final
Australia
Friday, September 25, 2020 Native American Day
United States
Friday, September 25, 2020 National Youth Day
Turks and Caicos Islands
Friday, September 25, 2020 St. Nicholas of Flüe
Switzerland
Friday, September 25, 2020 Armed Forces Day
Mozambique
Saturday, September 26, 2020 Make up Day for Mid Autumn Festival Holiday
Taiwan
Saturday, September 26, 2020 Revolution Day
Yemen
Saturday, September 26, 2020 International Day for the Total Elimination of Nuclear Weapons
United States
Saturday, September 26, 2020 Thimphu Tshechu (Thimphu only)
Bhutan
Sunday, September 27, 2020 Yom Kippur Eve
Israel
Sunday, September 27, 2020 World Tourism Day
Congo Democratic Republic
Sunday, September 27, 2020 Gold Star Mother's Day
United States
Sunday, September 27, 2020 World Tourism Day
United States
Sunday, September 27, 2020 Meskel
Eritrea
Sunday, September 27, 2020 Special Working Day
China
Sunday, September 27, 2020 Thimphu Tshechu (Thimphu only)
Bhutan
Sunday, September 27, 2020 European Heritage Days
Austria
Sunday, September 27, 2020 Day of the French Community
Belgium
Sunday, September 27, 2020 Day of the Walloon Region
Belgium
Sunday, September 27, 2020 Independence Day
Turkmenistan
Saturday, September 26, 2020 Daylight Saving Time starts
Samoa
Monday, September 28, 2020 Yom Kippur
Israel
Monday, September 28, 2020 Meskel
Ethiopia
Monday, September 28, 2020 Day of Bosnians
Kosovo
Monday, September 28, 2020 Yom Kippur
Argentina
Monday, September 28, 2020 South Canterbury Anniversary Day
New Zealand
Monday, September 28, 2020 St. Wenceslas Day
Czechia
Monday, September 28, 2020 Yom Kippur
Canada
Monday, September 28, 2020 Queen's Birthday
Australia
Monday, September 28, 2020 Thimphu Tshechu (Thimphu only)
Bhutan
Monday, September 28, 2020 Yom Kippur
United Kingdom
Monday, September 28, 2020 Teachers' Day
Taiwan
Monday, September 28, 2020 First day of Yom Kippur (Jewish community)
North Macedonia
Monday, September 28, 2020 International Bosniaks' Day (for Bosniak community)
North Macedonia
Monday, September 28, 2020 Yom Kippur
Montenegro
Monday, September 28, 2020 World Rabies Day
United States
Monday, September 28, 2020 Yom Kippur
United States
Tuesday, September 29, 2020 Feast of Saint Miguel
Spain
Tuesday, September 29, 2020 Yom Kippur Holiday
Montenegro
Tuesday, September 29, 2020 World Heart Day
United States
Tuesday, September 29, 2020 Boqueron Battle Victory Day
Paraguay
Wednesday, September 30, 2020 Nationalization of the Roças
Sao Tome and Principe
Wednesday, September 30, 2020 Chuseok Holiday
South Korea
Wednesday, September 30, 2020 Botswana Day
Botswana