| Sat, September 16 | Rosh Hashana | United Kingdom | Jewish Holiday |
| Sat, September 23 | September Equinox | United Kingdom | Season |
| Mon, September 25 | Yom Kippur | United Kingdom | Jewish Holiday |
| Wed, September 27 | Milad Un Nabi (mawlid) | United Kingdom | Muslim |
| Sat, September 30 | First Day Of Sukkot | United Kingdom | Jewish Holiday |
| Sun, September 03 | Father's Day | Australia | Observance |
| Sat, September 16 | Rosh Hashana | Australia | Jewish Holiday |
| Sat, September 23 | September Equinox | Australia | Season |
| Mon, September 25 | Yom Kippur | Australia | Jewish Holiday |
| Mon, September 25 | Queen's Birthday | Australia | Common State Holiday |
| Wed, September 27 | Milad Un Nabi (mawlid) | Australia | Muslim |
| Sat, September 30 | First Day Of Sukkot | Australia | Jewish Holiday |
| Mon, September 04 | Labour Day | Canada | National Holiday |
| Sat, September 16 | Rosh Hashana | Canada | Jewish Holiday |
| Sat, September 23 | September Equinox | Canada | Season |
| Mon, September 25 | Yom Kippur | Canada | Jewish Holiday |
| Wed, September 27 | Milad Un Nabi (mawlid) | Canada | Muslim |
| Sat, September 30 | First Day Of Sukkot | Canada | Jewish Holiday |
| Sat, September 23 | September Equinox | Hong Kong | Season |
| Fri, September 29 | Mid-autumn Festival | Hong Kong | Observance |
| Sat, September 30 | Day After Mid-autumn Festival | Hong Kong | National Holiday |
| Sun, September 03 | Father's Day | New Zealand | Observance |
| Sat, September 23 | September Equinox | New Zealand | Season |
| Mon, September 25 | South Canterbury Anniversary Day | New Zealand | Local Holiday |
| Sat, September 09 | Martyrs And Ahmad Shah Masoud Day | Afghanistan | Public Holiday |
| Sat, September 23 | September Equinox | Afghanistan | Season |
| Wed, September 27 | The Prophets Birthday | Afghanistan | Public Holiday |
| Tue, September 05 | Mother Teresa Beatification Day | Albania | National Holiday |
| Sat, September 23 | September Equinox | Albania | Season |
| Sat, September 23 | September Equinox | Algeria | Season |
| Wed, September 27 | The Prophet's Birthday | Algeria | Public Holiday |
| Mon, September 04 | Labor Day | American Samoa | Public Holiday |
| Fri, September 22 | September Equinox | American Samoa | Season |
| Fri, September 08 | National Day | Andorra | National Holiday |
| Sat, September 23 | September Equinox | Andorra | Season |
| Sun, September 17 | National Hero Day | Angola | Public Holiday |
| Sat, September 23 | September Equinox | Angola | Season |
| Sat, September 23 | September Equinox | Anguilla | Season |
| Sat, September 23 | September Equinox | Antigua And Barbuda | Season |
| Fri, September 15 | Rosh Hashana Eve | Argentina | Hebrew |
| Sat, September 16 | Rosh Hashana | Argentina | Hebrew |
| Sun, September 17 | Second Day Of Rosh Hashana | Argentina | Hebrew |
| Sat, September 23 | September Equinox | Argentina | Season |
| Sun, September 24 | Yom Kippur Eve | Argentina | Hebrew |
| Mon, September 25 | Yom Kippur | Argentina | Hebrew |
| Fri, September 01 | Knowledge And Literature Day | Armenia | Observance |
| Thu, September 21 | Independence Day | Armenia | National Holiday |
| Sat, September 23 | September Equinox | Armenia | Season |
| Sat, September 23 | September Equinox | Aruba | Season |
| Sat, September 23 | September Equinox | Bahrain | Season |
| Wed, September 27 | The Prophet's Birthday | Bahrain | National Holiday |
| Sat, September 23 | September Equinox | Barbados | Season |
| Sat, September 23 | September Equinox | Belarus | Season |
| Sat, September 23 | September Equinox | Belgium | Season |
| Sun, September 24 | Day Of The Walloon Region | Belgium | Regional Government Holiday |
| Wed, September 27 | Day Of The French Community | Belgium | Regional Government Holiday |
| Sun, September 10 | St. George's Caye Day | Belize | Public Holiday |
| Mon, September 11 | Day Off For St. George's Caye Day | Belize | Public Holiday |
| Thu, September 21 | Independence Day | Belize | Public Holiday |
| Sat, September 23 | September Equinox | Belize | Season |
| Sat, September 23 | September Equinox | Benin | Season |
| Wed, September 27 | Maouloud | Benin | Public Holiday |
| Mon, September 04 | Labour Day | Bermuda | Public Holiday |
| Sat, September 23 | September Equinox | Bermuda | Season |
| Sat, September 23 | September Equinox | Bolivia | Season |
| Sat, September 23 | September Equinox | Bosnia And Herzegovina | Season |
| Sat, September 23 | September Equinox | Botswana | Season |
| Sat, September 30 | Botswana Day | Botswana | Public Holiday |
| Thu, September 07 | Independence Day | Brazil | National Holiday |
| Sat, September 23 | September Equinox | Brazil | Season |
| Sat, September 23 | September Equinox | British Virgin Islands | Season |
| Sat, September 23 | September Equinox | Brunei | Season |
| Wed, September 27 | Milad Un Nabi (mawlid) | Brunei | Public Holiday |
| Wed, September 06 | Unification Day | Bulgaria | National Holiday |
| Fri, September 22 | Independence Day | Bulgaria | National Holiday |
| Sat, September 23 | September Equinox | Bulgaria | Season |
| Sat, September 23 | September Equinox | Burkina Faso | Season |
| Wed, September 27 | The Prophet's Birthday | Burkina Faso | Public Holiday |
| Sat, September 23 | September Equinox | Burundi | Season |
| Sat, September 23 | September Equinox | Cabo Verde | Season |
| Sat, September 23 | September Equinox | Cambodia | Season |
| Sun, September 24 | Constitutional Day | Cambodia | Public Holiday |
| Sat, September 23 | September Equinox | Cameroon | Season |
| Wed, September 27 | The Prophet's Birthday | Cameroon | Public Holiday |
| Sat, September 23 | September Equinox | Cayman Islands | Season |
| Sat, September 23 | September Equinox | Central African Republic | Season |
| Sat, September 23 | September Equinox | Chad | Season |
| Wed, September 27 | The Prophet's Birthday | Chad | Public Holiday |
| Mon, September 18 | National Day | Chile | National Holiday |
| Tue, September 19 | Army Day | Chile | National Holiday |
| Sat, September 23 | September Equinox | Chile | Season |
| Sun, September 10 | Teachers' Day | China | Observance |
| Sat, September 23 | September Equinox | China | Season |
| Fri, September 29 | Mid-autumn Festival | China | National Holiday |
| Sat, September 16 | Valentine's Day | Colombia | Observance |
| Sat, September 23 | September Equinox | Colombia | Season |
| Sat, September 23 | September Equinox | Comoros | Season |
| Wed, September 27 | The Prophet's Birthday | Comoros | Public Holiday |
| Sat, September 23 | September Equinox | Congo | Season |
| Sat, September 23 | September Equinox | Congo Democratic Republic | Season |
| Wed, September 27 | World Tourism Day | Congo Democratic Republic | Observance |
| Fri, September 22 | September Equinox | Cook Islands | Season |
| Sat, September 09 | Children's Day | Costa Rica | Observance |
| Fri, September 15 | Independence Day | Costa Rica | National Holiday |
| Sat, September 23 | September Equinox | Costa Rica | Season |
| Sat, September 16 | Rosh Hashana | Croatia | Optional Holiday |
| Sat, September 23 | September Equinox | Croatia | Season |
| Mon, September 25 | Yom Kippur | Croatia | Optional Holiday |
| Sat, September 23 | September Equinox | Cuba | Season |
| Sat, September 23 | September Equinox | Curacao | Season |
| Sat, September 23 | September Equinox | Cyprus | Season |
| Sat, September 23 | September Equinox | Czechia | Season |
| Thu, September 28 | St. Wenceslas Day | Czechia | National Holiday |
| Sat, September 23 | September Equinox | Denmark | Season |
| Sat, September 23 | September Equinox | Dominica | Season |
| Sat, September 23 | September Equinox | Dominican Republic | Season |
| Sun, September 24 | Our Lady Of Las Mercedes | Dominican Republic | National Holiday |
| Sat, September 23 | September Equinox | East Timor | Season |
| Sat, September 23 | September Equinox | Ecuador | Season |
| Tue, September 12 | Nayrouz | Egypt | Observance |
| Sat, September 23 | September Equinox | Egypt | Season |
| Wed, September 27 | Prophet Mohamed's Birthday | Egypt | National Holiday |
| Fri, September 15 | Independence Day | El Salvador | National Holiday |
| Sat, September 23 | September Equinox | El Salvador | Season |
| Fri, September 01 | Commencement Day Of Eritrean Armed Struggle | Eritrea | Public Holiday |
| Sat, September 23 | September Equinox | Eritrea | Season |
| Wed, September 27 | The Prophet's Birthday | Eritrea | Public Holiday |
| Wed, September 27 | Meskel | Eritrea | Public Holiday |
| Sat, September 23 | September Equinox | Estonia | Season |
| Sat, September 23 | September Equinox | Ethiopia | Season |
| Wed, September 27 | The Prophet's Birthday | Ethiopia | Public Holiday |
| Wed, September 27 | Meskel | Ethiopia | Public Holiday |
| Sat, September 23 | September Equinox | Falkland Islands | Season |
| Sat, September 23 | September Equinox | Faroe Islands | Season |
| Thu, September 07 | Constitution Day | Fiji | Public Holiday |
| Sat, September 23 | September Equinox | Fiji | Season |
| Wed, September 27 | The Prophet's Birthday | Fiji | Public Holiday |
| Sat, September 23 | September Equinox | Finland | Season |
| Sat, September 23 | September Equinox | France | Season |
| Sat, September 23 | September Equinox | French Guiana | Season |
| Fri, September 22 | September Equinox | French Polynesia | Season |
| Sat, September 23 | September Equinox | Gabon | Season |
| Sat, September 23 | September Equinox | Gambia | Season |
| Wed, September 27 | The Prophet's Birthday | Gambia | Public Holiday |
| Sat, September 23 | September Equinox | Georgia | Season |
| Fri, September 01 | World Peace Day | Germany | Observance |
| Sat, September 09 | German Language Day | Germany | Observance |
| Sun, September 10 | European Heritage Days | Germany | Observance |
| Wed, September 20 | German World Children's Day | Germany | Common Local Holiday |
| Wed, September 20 | German World Children's Day | Germany | Observance |
| Sat, September 23 | September Equinox | Germany | Season |
| Thu, September 21 | Kwame Nkrumah Memorial Day | Ghana | Public Holiday |
| Sat, September 23 | September Equinox | Ghana | Season |
| Sun, September 10 | Gibraltar Day | Gibraltar | Public Holiday |
| Mon, September 11 | Gibraltar Day Observed | Gibraltar | Public Holiday |
| Sat, September 23 | September Equinox | Gibraltar | Season |
| Sat, September 23 | September Equinox | Greece | Season |
| Sat, September 23 | September Equinox | Greenland | Season |
| Fri, September 01 | Kirani Day | Grenada | Observance |
| Sat, September 23 | September Equinox | Grenada | Season |
| Mon, September 04 | Labor Day | Guam | Public Holiday |
| Sat, September 23 | September Equinox | Guam | Season |
| Fri, September 15 | Independence Day | Guatemala | National Holiday |
| Sat, September 23 | September Equinox | Guatemala | Season |
| Sat, September 23 | September Equinox | Guernsey | Season |
| Sat, September 23 | September Equinox | Guinea | Season |
| Wed, September 27 | The Prophet's Birthday | Guinea | Public Holiday |
| Sat, September 23 | September Equinox | Guyana | Season |
| Wed, September 27 | Youman-nabi (mawlid) | Guyana | Public Holiday |
| Sat, September 23 | September Equinox | Haiti | Season |
| Sun, September 10 | Children's Day | Honduras | Observance |
| Fri, September 15 | Independence Day | Honduras | National Holiday |
| Sun, September 17 | Teacher's Day | Honduras | Observance |
| Sat, September 23 | September Equinox | Honduras | Season |
| Sat, September 23 | September Equinox | Hungary | Season |
| Sat, September 23 | September Equinox | Iceland | Season |
| Wed, September 06 | Arbaeen | Iran | National Holiday |
| Thu, September 14 | Demise Of Prophet Muhammad And Martyrdom Of Imam Hassan | Iran | National Holiday |
| Fri, September 15 | Martyrdom Of Imam Reza | Iran | National Holiday |
| Sat, September 23 | September Equinox | Iran | Season |
| Sat, September 23 | Martyrdom Of Imam Hasan Al-askari | Iran | National Holiday |
| Sat, September 23 | September Equinox | Iraq | Season |
| Wed, September 27 | The Prophet's Birthday | Iraq | National Holiday |
| Sat, September 23 | September Equinox | Ireland | Season |
| Sat, September 23 | September Equinox | Isle Of Man | Season |
| Fri, September 15 | Rosh Hashana Eve | Israel | Observance, Hebrew |
| Sat, September 16 | Rosh Hashana | Israel | National Holiday, Hebrew |
| Sun, September 17 | Rosh Hashana (day 2) | Israel | National Holiday, Hebrew |
| Mon, September 18 | Gedaliah Fast | Israel | Observance, Hebrew |
| Sat, September 23 | September Equinox | Israel | Season |
| Sun, September 24 | Yom Kippur Eve | Israel | Observance, Hebrew |
| Mon, September 25 | Yom Kippur | Israel | National Holiday, Hebrew |
| Fri, September 29 | Sukkot Eve | Israel | Observance, Hebrew |
| Sat, September 30 | Sukkot (day 1) | Israel | National Holiday, Hebrew |
| Tue, September 19 | The Feast Of Saint Januarius (naples) | Italy | Local Holiday |
| Sat, September 23 | September Equinox | Italy | Season |
| Sat, September 23 | September Equinox | Jamaica | Season |
| Mon, September 18 | Respect For The Aged Day | Japan | National Holiday |
| Sat, September 23 | September Equinox | Japan | Season |
| Sat, September 23 | Autumn Equinox | Japan | National Holiday |
| Sat, September 23 | September Equinox | Jersey | Season |
| Sat, September 23 | September Equinox | Jordan | Season |
| Wed, September 27 | Prophet's Birthday | Jordan | National Holiday |
| Sat, September 23 | September Equinox | Kazakhstan | Season |
| Sat, September 23 | September Equinox | Kenya | Season |
| Sat, September 23 | September Equinox | Kiribati | Season |
| Sat, September 23 | September Equinox | Kuwait | Season |
| Wed, September 27 | The Prophet's Birthday | Kuwait | Official Holiday |
| Sat, September 23 | September Equinox | Kyrgyzstan | Season |
| Sat, September 23 | September Equinox | Laos | Season |
| Fri, September 08 | Nativity Of Mary | Lebanon | Observance |
| Sat, September 23 | September Equinox | Lebanon | Season |
| Wed, September 27 | The Prophet's Birthday | Lebanon | Public Holiday |
| Sat, September 23 | September Equinox | Lesotho | Season |
| Sat, September 23 | September Equinox | Liberia | Season |
| Sat, September 16 | Martyrs' Day | Libya | Public Holiday |
| Sat, September 23 | September Equinox | Libya | Season |
| Wed, September 27 | The Prophet's Birthday | Libya | Public Holiday |
| Sat, September 23 | September Equinox | Lithuania | Season |
| Sat, September 23 | September Equinox | Luxembourg | Season |
| Sat, September 23 | September Equinox | Macau | Season |
| Sat, September 30 | Day After The Mid-autumn-festival | Macau | Obligatory Holiday |
| Sat, September 23 | September Equinox | Madagascar | Season |
| Sat, September 23 | September Equinox | Malawi | Season |
| Sat, September 23 | September Equinox | Maldives | Season |
| Wed, September 27 | Milad Un Nabi (mawlid) | Maldives | Public Holiday |
| Fri, September 22 | Independence Day | Mali | Public Holiday |
| Sat, September 23 | September Equinox | Mali | Season |
| Wed, September 27 | The Prophet's Birthday | Mali | Public Holiday |
| Fri, September 08 | The Feast Of Our Lady Of Victories | Malta | National Holiday |
| Thu, September 21 | Independence Day | Malta | National Holiday |
| Fri, September 01 | Labor Day | Marshall Islands | Public Holiday |
| Fri, September 22 | Manit Day | Marshall Islands | Public Holiday |
| Sat, September 23 | September Equinox | Marshall Islands | Season |
| Sat, September 23 | September Equinox | Martinique | Season |
| Sat, September 23 | September Equinox | Mauritania | Season |
| Wed, September 27 | Milad Un Nabi (mawlid) | Mauritania | Public Holiday |
| Mon, September 18 | Ganesh Chaturthi | Mauritius | Public Holiday |
| Sat, September 23 | September Equinox | Mauritius | Season |
| Fri, September 15 | Shout Of Dolores | Mexico | Observance |
| Sat, September 16 | Independence Day | Mexico | National Holiday |
| Sat, September 23 | September Equinox | Mexico | Season |
| Fri, September 08 | Kosrae Liberation Day | Micronesia | Local Holiday |
| Mon, September 11 | Pohnpei Liberation Day | Micronesia | Local Holiday |
| Sat, September 23 | September Equinox | Micronesia | Season |
| Sat, September 23 | September Equinox | Moldova | Season |
| Sat, September 23 | September Equinox | Monaco | Season |
| Sun, September 10 | Repression Victims' Day | Mongolia | Observance |
| Sat, September 23 | September Equinox | Mongolia | Season |
| Sat, September 23 | September Equinox | Montenegro | Season |
| Mon, September 25 | Yom Kippur | Montenegro | Optional Holiday |
| Tue, September 26 | Yom Kippur Holiday | Montenegro | Optional Holiday |
| Sat, September 23 | September Equinox | Montserrat | Season |
| Sat, September 23 | September Equinox | Morocco | Season |
| Wed, September 27 | The Prophet Muhammad's Birthday | Morocco | National Holiday |
| Thu, September 07 | Victory Day | Mozambique | Public Holiday |
| Sat, September 23 | September Equinox | Mozambique | Season |
| Mon, September 25 | Armed Forces Day | Mozambique | Public Holiday |
| Sat, September 23 | September Equinox | Myanmar | Season |
| Sat, September 23 | September Equinox | Namibia | Season |
| Sat, September 23 | September Equinox | Nauru | Season |
| Sat, September 23 | September Equinox | Netherlands | Season |
| Sat, September 23 | September Equinox | New Caledonia | Season |
| Sun, September 24 | New Caledonia Day | New Caledonia | Public Holiday |
| Sat, September 23 | September Equinox | Niger | Season |
| Wed, September 27 | The Prophet's Birthday | Niger | Public Holiday |
| Sat, September 23 | September Equinox | Nigeria | Season |
| Wed, September 27 | Id El Maulud | Nigeria | Public Holiday |
| Sat, September 09 | National Day | North Korea | Public Holiday |
| Sat, September 23 | September Equinox | North Korea | Season |
| Mon, September 04 | Labor Day | Northern Mariana Islands | Public Holiday |
| Sat, September 23 | September Equinox | Northern Mariana Islands | Season |
| Sat, September 23 | September Equinox | Norway | Season |
| Sat, September 23 | September Equinox | Oman | Season |
| Mon, September 04 | Labor Day | Palau | Public Holiday |
| Sat, September 23 | September Equinox | Palau | Season |
| Sat, September 23 | September Equinox | Panama | Season |
| Sat, September 16 | Independence Day | Papua New Guinea | Public Holiday |
| Sat, September 23 | September Equinox | Papua New Guinea | Season |
| Sat, September 23 | September Equinox | Paraguay | Season |
| Fri, September 29 | Boqueron Battle Victory Day | Paraguay | National Holiday |
| Sat, September 23 | September Equinox | Peru | Season |
| Sun, September 24 | Armed Forces Day | Peru | Observance |
| Sun, September 03 | Yamashita Surrender Day | Philippines | Special Working Public Holiday |
| Fri, September 08 | Feast Of The Nativity Of Mary | Philippines | Special Working Public Holiday |
| Sat, September 23 | September Equinox | Philippines | Season |
| Wed, September 27 | Maulid Un-nabi | Philippines | Common Local Holiday |
| Sat, September 23 | September Equinox | Poland | Season |
| Thu, September 07 | Faro Day | Portugal | Municipal Holiday |
| Fri, September 15 | Birth Of Bocage | Portugal | Municipal Holiday |
| Thu, September 21 | St. Matthew's Day | Portugal | Municipal Holiday |
| Sat, September 23 | September Equinox | Portugal | Season |
| Mon, September 04 | Labor Day | Puerto Rico | Bank/public Sector Holiday |
| Sat, September 23 | September Equinox | Puerto Rico | Season |
| Sat, September 23 | September Equinox | Qatar | Season |
| Sat, September 23 | September Equinox | Reunion | Season |
| Sat, September 23 | September Equinox | Romania | Season |
| Fri, September 01 | Day Of Knowledge | Russia | Observance |
| Sat, September 23 | September Equinox | Russia | Season |
| Wed, September 27 | The Prophet's Birthday | Russia | Muslim |
| Sat, September 23 | September Equinox | Rwanda | Season |
| Sat, September 23 | September Equinox | Saint Helena | Season |
| Sat, September 16 | National Heroes Day | Saint Kitts And Nevis | Public Holiday |
| Tue, September 19 | Independence Day | Saint Kitts And Nevis | Public Holiday |
| Sat, September 23 | September Equinox | Saint Kitts And Nevis | Season |
| Sat, September 23 | September Equinox | Saint Lucia | Season |
| Sat, September 23 | September Equinox | Saint Martin | Season |
| Sat, September 23 | September Equinox | Saint Pierre And Miquelon | Season |
| Sat, September 23 | September Equinox | Saint Vincent And The Grenadines | Season |
| Sat, September 23 | September Equinox | Samoa | Season |
| Sun, September 24 | Daylight Saving Time Starts | Samoa | Clock Change/daylight Saving Time |
| Sun, September 03 | The Feast Of St Marinus And Republic Day | San Marino | National Holiday |
| Sat, September 23 | September Equinox | San Marino | Season |
| Sat, September 23 | September Equinox | Saudi Arabia | Season |
| Sun, September 24 | Saudi National Day | Saudi Arabia | National Holiday |
| Mon, September 04 | Grand Magal De Touba | Senegal | Public Holiday |
| Sat, September 23 | September Equinox | Senegal | Season |
| Wed, September 27 | Maouloud | Senegal | Public Holiday |
| Sat, September 23 | September Equinox | Serbia | Season |
| Sat, September 23 | September Equinox | Singapore | Season |
| Sat, September 23 | September Equinox | Sint Maarten | Season |
| Fri, September 01 | Constitution Day | Slovakia | National Holiday |
| Sat, September 09 | Day Of The Victims Of Holocaust And Of Racial Violence | Slovakia | Observance |
| Fri, September 15 | Day Of Our Lady Of Sorrows | Slovakia | National Holiday |
| Tue, September 19 | Foundation Of The Slovak National Council Day | Slovakia | Observance |
| Sat, September 23 | September Equinox | Slovakia | Season |
| Sat, September 23 | September Equinox | Solomon Islands | Season |
| Sat, September 23 | September Equinox | Somalia | Season |
| Wed, September 27 | The Prophet's Birthday | Somalia | Public Holiday |
| Fri, September 15 | Restoration Of Primorska To The Motherland Day | Slovenia | Observance |
| Sat, September 23 | September Equinox | Slovenia | Season |
| Sat, September 23 | September Equinox | South Africa | Season |
| Sun, September 24 | Heritage Day | South Africa | Public Holiday |
| Mon, September 25 | Heritage Day Observed | South Africa | Public Holiday |
| Wed, September 27 | Milad Un Nabi (mawlid) | South Africa | Muslim |
| Sat, September 23 | September Equinox | South Korea | Season |
| Thu, September 28 | Chuseok Holiday | South Korea | Public Holiday |
| Fri, September 29 | Chuseok | South Korea | Public Holiday |
| Sat, September 30 | Chuseok Holiday | South Korea | Public Holiday |
| Sat, September 02 | Day Of The Independent City Of Ceuta | Spain | Local Holiday |
| Fri, September 08 | Day Of Asturias | Spain | Local Holiday |
| Fri, September 08 | Day Of Extremadura | Spain | Local Holiday |
| Fri, September 08 | Virgin Of The Victory | Spain | Local Holiday |
| Mon, September 11 | Day Of Catalonia | Spain | Local Holiday |
| Fri, September 15 | Nuestra Senora De La Bien Aparecida | Spain | Local Holiday |
| Sun, September 17 | Day Of Melilla | Spain | Local Holiday |
| Sat, September 23 | September Equinox | Spain | Season |
| Sat, September 23 | September Equinox | St. Barts | Season |
| Sat, September 23 | September Equinox | Sudan | Season |
| Wed, September 27 | The Prophet's Birthday | Sudan | Public Holiday |
| Sat, September 23 | September Equinox | Suriname | Season |
| Sat, September 23 | September Equinox | Sweden | Season |
| Thu, September 07 | Jeune Genevois | Switzerland | Common Local Holiday |
| Sat, September 09 | Knabenschiessen | Switzerland | Observance |
| Sun, September 10 | Knabenschiessen | Switzerland | Observance |
| Mon, September 11 | Knabenschiessen | Switzerland | Observance |
| Sun, September 17 | Swiss Federal Fast | Switzerland | Common Local Holiday |
| Mon, September 18 | Federal Fast Monday | Switzerland | Common Local Holiday |
| Fri, September 22 | Mauritius Day | Switzerland | Common Local Holiday |
| Sat, September 23 | September Equinox | Switzerland | Season |
| Mon, September 25 | St. Nicholas Of Flue | Switzerland | Common Local Holiday |
| Sat, September 23 | September Equinox | Syria | Season |
| Wed, September 27 | The Prophet's Birthday | Syria | Public Holiday |
| Sun, September 03 | Armed Forces Day | Taiwan | Observance |
| Sat, September 23 | September Equinox | Taiwan | Season |
| Thu, September 28 | Teachers' Day | Taiwan | Observance |
| Fri, September 29 | Mid-autumn Festival | Taiwan | National Holiday |
| Sat, September 09 | Independence Day | Tajikistan | Public Holiday |
| Sat, September 23 | September Equinox | Tajikistan | Season |
| Sat, September 23 | September Equinox | Tanzania | Season |
| Wed, September 27 | Maulid | Tanzania | Public Holiday |
| Sat, September 23 | September Equinox | Thailand | Season |
| Sat, September 23 | September Equinox | The Bahamas | Season |
| Sun, September 17 | Birthday Of Crown Prince Tupouto'a-'ulukalala | Tonga | Public Holiday |
| Mon, September 18 | Day Off For Birthday Of Crown Prince Tupouto'a-'ulukalala | Tonga | Public Holiday |
| Sat, September 23 | September Equinox | Tonga | Season |
| Sat, September 23 | September Equinox | Trinidad And Tobago | Season |
| Sun, September 24 | Republic Day | Trinidad And Tobago | Public Holiday |
| Mon, September 25 | Republic Day Observed | Trinidad And Tobago | Public Holiday |
| Sat, September 23 | September Equinox | Tunisia | Season |
| Wed, September 27 | The Prophet's Birthday | Tunisia | Public Holiday |
| Sat, September 23 | September Equinox | Turkey | Season |
| Sat, September 09 | Day Of The Workers In The Energy Sector | Turkmenistan | Observance |
| Sat, September 23 | September Equinox | Turkmenistan | Season |
| Wed, September 27 | Independence Day | Turkmenistan | Public Holiday |
| Fri, September 22 | National Youth Day | Turks And Caicos Islands | Public Holiday |
| Sat, September 23 | September Equinox | Turks And Caicos Islands | Season |
| Sat, September 23 | September Equinox | Tuvalu | Season |
| Sat, September 23 | September Equinox | Uganda | Season |
| Sat, September 23 | September Equinox | Ukraine | Season |
| Sat, September 23 | September Equinox | Uruguay | Season |
| Mon, September 04 | Labor Day | Us Virgin Islands | Public Holiday |
| Sat, September 23 | September Equinox | Us Virgin Islands | Season |
| Fri, September 01 | Independence Day | Uzbekistan | Public Holiday |
| Sat, September 23 | September Equinox | Uzbekistan | Season |
| Sat, September 23 | September Equinox | Vanuatu | Season |
| Sat, September 23 | September Equinox | Vatican City | Season |
| Mon, September 11 | Our Lady Of Coromoto | Venezuela | Observance |
| Sat, September 23 | September Equinox | Venezuela | Season |
| Sat, September 02 | Independence Day | Vietnam | National Holiday |
| Mon, September 04 | Independence Day Observed | Vietnam | National Holiday |
| Sat, September 23 | September Equinox | Vietnam | Season |
| Sat, September 23 | September Equinox | Wallis And Futuna | Season |
| Sat, September 23 | September Equinox | Yemen | Season |
| Tue, September 26 | Revolution Day | Yemen | Public Holiday |
| Wed, September 27 | The Prophet's Birthday | Yemen | Observance |
| Sat, September 23 | September Equinox | Zambia | Season |
| Sat, September 23 | September Equinox | Zimbabwe | Season |
| Sat, September 30 | First Day Of Sukkot | United States | Jewish Holiday |
| Wed, September 27 | The Prophet's Birthday | United States | Muslim |
| Mon, September 25 | Yom Kippur | United States | Jewish Holiday |
| Sun, September 24 | Gold Star Mother's Day | United States | Observance |
| Sat, September 23 | September Equinox | United States | Season |
| Fri, September 22 | Native American Day | United States | Local Observance |
| Fri, September 22 | Emancipation Day | United States | Local Observance |
| Mon, September 18 | Constitution Day And Citizenship Day Observed | United States | Observance |
| Mon, September 18 | Air Force Birthday | United States | Observance |
| Sun, September 17 | Constitution Day And Citizenship Day | United States | Observance |
| Sat, September 16 | Rosh Hashana | United States | Jewish Holiday |
| Fri, September 15 | National Pow/mia Recognition Day | United States | Observance |
| Mon, September 11 | Patriot Day | United States | Observance |
| Sun, September 10 | National Grandparents Day | United States | Observance |
| Sat, September 09 | California Admission Day | United States | Local Observance |
| Sat, September 09 | Carl Garner Federal Lands Cleanup Day | United States | Observance |
| Mon, September 04 | Labor Day | United States | Federal Holiday |
| Sat, September 23 | September Equinox | Austria | Season |
| Sun, September 24 | European Heritage Days | Austria | Observance |
| Sun, September 24 | Saint Rupert's Day | Austria | State Holiday |
| Mon, September 25 | Yom Kippur | Austria | Optional Holiday |
| Wed, September 06 | Janmashtami | Bangladesh | Government Holiday |
| Mon, September 11 | Akhari Chahar Somba (tentative Date) | Bangladesh | Optional Holiday |
| Tue, September 19 | Ganesh Chaturthi | Bangladesh | Hindu Holiday |
| Sat, September 23 | September Equinox | Bangladesh | Season |
| Wed, September 27 | Eid E-milad-un Nabi (tentative Date) | Bangladesh | Government Holiday |
| Fri, September 29 | Madhu Purnima | Bangladesh | Optional Holiday |
| Wed, September 06 | Chelum (tentative Date) | Pakistan | Optional Holiday |
| Wed, September 06 | Defence Day | Pakistan | Observance |
| Tue, September 19 | Ganesh Chaturthi | Pakistan | Hindu Holiday |
| Sat, September 23 | September Equinox | Pakistan | Season |
| Tue, September 26 | Giarhwin Sharief (tentative Date) | Pakistan | Optional Holiday |
| Wed, September 27 | Eid Milad Un-nabi (tentative Date) | Pakistan | Public Holiday |
| Wed, September 20 | Thimphu Drubchoe (thimphu Only) | Bhutan | Municipal Holiday |
| Sat, September 23 | Blessed Rainy Day | Bhutan | Public Holiday |
| Sat, September 23 | September Equinox | Bhutan | Season |
| Sun, September 24 | Thimphu Tshechu (thimphu Only) | Bhutan | Municipal Holiday |
| Mon, September 25 | Thimphu Tshechu (thimphu Only) | Bhutan | Municipal Holiday |
| Tue, September 26 | Thimphu Tshechu (thimphu Only) | Bhutan | Municipal Holiday |
| Sat, September 16 | Malaysia Day | Malaysia | Federal Public Holiday |
| Sat, September 23 | September Equinox | Malaysia | Season |
| Thu, September 28 | The Prophet Muhammad's Birthday (tentative Date) | Malaysia | Federal Public Holiday |
| Fri, September 01 | Gai Jatra | Nepal | Public Holiday |
| Wed, September 06 | Gaura Parba | Nepal | Optional Holiday |
| Wed, September 06 | Shree Krishna Janamashtami (tentative Date) | Nepal | Public Holiday |
| Mon, September 18 | Hartalika Teej | Nepal | Optional Holiday |
| Tue, September 19 | Constitution Day | Nepal | Public Holiday |
| Sat, September 23 | September Equinox | Nepal | Season |
| Thu, September 28 | Indra Jatra | Nepal | Local Holiday |
| Sat, September 23 | September Equinox | United Arab Emirates | Season |
| Wed, September 27 | Mouloud (tentative Date) | United Arab Emirates | National Holiday |
| Wed, September 06 | Janmashtami | India | Gazetted Holiday |
| Thu, September 07 | Janmashtami | India | Restricted Holiday |
| Tue, September 19 | Ganesh Chaturthi | India | Restricted Holiday |
| Sat, September 23 | September Equinox | India | Season |
| Thu, September 28 | Id E Milad | India | Gazetted Holiday |