HomeInternational DaysInternational Days 2027: Full UN Calendar by Month
spot_imgspot_img

International Days 2027: Full UN Calendar by Month

The 2027 calendar of international days lists 236 UN observances, from World Braille Day on Monday, January 4, to the International Day of Epidemic Preparedness on Monday, December 27. Eighty fall on a weekend.

This calendar lists every international day on the United Nations’ official list for 2027, with the weekday each one falls on. Most international days are fixed dates, but seven are not.

Vesak follows the May full moon, World Migratory Bird Day is held on the second Saturday of May and again in October, and four others fall on a set weekday rather than a set date.

Their 2027 dates appear in the month tables and in a separate table below. In 2027, 47 international days fall on a Sunday and 33 on a Saturday, so about one in three lands on a weekend.

Days that have their own Datescal page are linked in the tables, alongside observances that are not UN days, such as Earth Day, World Otter Day and European Day of Parks.

International days 2027 at a glance

June is the busiest month for international days in 2027, with 33, and January the quietest, with 5. The table below shows how many fall in each month.

MonthInternational daysBusiest date
January5One per date
February11Wednesday, February 10 (2)
March22Sunday, March 21 (6)
April25Friday, April 23 (4)
May23Several dates with 2
June33Several dates with 2
July18Sunday, July 11, and Sunday, July 25 (3 each)
August13Tuesday, August 31 (2)
September23Tuesday, September 7, and Thursday, September 16 (3 each)
October20Several dates with 2
November20Several dates with 2
December24Several dates with 2
Total237 dates, 236 observancesSunday, March 21 (6)

World Migratory Bird Day is counted twice in the total because it is held in both May and October.

International days by weekday in 2027

The table below shows how the 237 dates fall across the week in 2027.

WeekdayInternational days
Monday31
Tuesday31
Wednesday33
Thursday32
Friday30
Saturday33
Sunday47

Sunday carries 47 international days in 2027, 14 more than any other weekday. Observances that fall on a weekend are often marked with events on the nearest working day.

In the month tables below, a dagger (†) marks a moveable day whose date changes every year.

International days in January 2027

January 2027 has 5 international days, the fewest of any month. The table below lists them with their weekdays.

DateDayInternational day
January 4MondayWorld Braille Day
January 24SundayInternational Day of Education
January 26TuesdayInternational Day of Clean Energy
January 27WednesdayInternational Day of Commemoration in Memory of the Victims of the Holocaust
January 28ThursdayInternational Day of Peaceful Coexistence

International days in February 2027

February 2027 has 11 international days. World Pulses Day and the International Day of the Arabian Leopard share Wednesday, February 10.

DateDayInternational day
February 2TuesdayWorld Wetlands Day
February 4ThursdayInternational Day of Human Fraternity
February 6SaturdayInternational Day of Zero Tolerance to Female Genital Mutilation
February 10WednesdayWorld Pulses Day
February 10WednesdayInternational Day of the Arabian Leopard
February 11ThursdayInternational Day of Women and Girls in Science
February 12FridayInternational Day for the Prevention of Violent Extremism as and when Conducive to Terrorism
February 13SaturdayWorld Radio Day
February 17WednesdayGlobal Tourism Resilience Day
February 20SaturdayWorld Day of Social Justice
February 21SundayInternational Mother Language Day

International days in March 2027

March 2027 has 22 international days. Sunday, March 21, carries 6 of them, more than any other date in 2027.

DateDayInternational day
March 1MondayZero Discrimination Day
March 1MondayWorld Seagrass Day
March 3WednesdayWorld Wildlife Day
March 5FridayInternational Day for Disarmament and Non-Proliferation Awareness
March 8MondayInternational Women’s Day
March 10WednesdayInternational Day of Women Judges
March 15MondayInternational Day to Combat Islamophobia
March 20SaturdayInternational Day of Happiness
March 20SaturdayFrench Language Day
March 21SundayWorld Day for Glaciers
March 21SundayInternational Day of Forests
March 21SundayInternational Day for the Elimination of Racial Discrimination
March 21SundayWorld Poetry Day
March 21SundayInternational Day of Nowruz
March 21SundayWorld Down Syndrome Day
March 22MondayWorld Water Day
March 23TuesdayWorld Meteorological Day
March 24WednesdayWorld Tuberculosis Day
March 24WednesdayInternational Day for the Right to the Truth concerning Gross Human Rights Violations and for the Dignity of Victims
March 25ThursdayInternational Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade
March 25ThursdayInternational Day of Solidarity with Detained and Missing Staff Members
March 30TuesdayInternational Day of Zero Waste

International days in April 2027

April 2027 has 25 international days. Friday, April 23, includes 4, including English Language Day and Spanish Language Day.

DateDayInternational day
April 2FridayWorld Autism Awareness Day
April 4SundayInternational Day for Mine Awareness and Assistance in Mine Action
April 5MondayInternational Day of Conscience
April 6TuesdayInternational Day of Sport for Development and Peace
April 7WednesdayInternational Day of Reflection on the 1994 Genocide against the Tutsi in Rwanda
April 7WednesdayWorld Health Day
April 12MondayInternational Day of Human Space Flight
April 14WednesdayWorld Chagas Disease Day
April 15ThursdayInternational Wellness Day
April 20TuesdayChinese Language Day
April 21WednesdayWorld Creativity and Innovation Day
April 22ThursdayInternational Day of Greening the Planet
April 22ThursdayInternational Mother Earth Day
April 23FridayInternational Girls in ICT Day
April 23FridayWorld Book and Copyright Day
April 23FridayEnglish Language Day
April 23FridaySpanish Language Day
April 24SaturdayInternational Day of Multilateralism and Diplomacy for Peace
April 25SundayWorld Malaria Day
April 25SundayInternational Delegate’s Day
April 26MondayInternational Chernobyl Disaster Remembrance Day
April 26MondayWorld Intellectual Property Day
April 28WednesdayWorld Day for Safety and Health at Work
April 29ThursdayInternational Day in Memory of the Victims of Earthquakes
April 30FridayInternational Jazz Day

International days in May 2027

May 2027 has 23 international days, counting the first of World Migratory Bird Day’s two annual dates. Vesak follows the full moon of May, which falls on Thursday, May 20, 2027.

DateDayInternational day
May 2SundayWorld Tuna Day
May 3MondayWorld Press Freedom Day
May 5WednesdayWorld Portuguese Language Day
May 8SaturdayTime of Remembrance and Reconciliation for Those Who Lost Their Lives During the Second World War
May 8SaturdayWorld Migratory Bird Day (May) †
May 10MondayInternational Day of Argania
May 12WednesdayInternational Day of Plant Health
May 15SaturdayInternational Day of Families
May 16SundayInternational Day of Living Together in Peace
May 16SundayInternational Day of Light
May 17MondayWorld Telecommunication and Information Society Day
May 19WednesdayWorld Fair Play Day
May 20ThursdayVesak, the Day of the Full Moon †
May 20ThursdayWorld Bee Day
May 21FridayInternational Tea Day
May 21FridayWorld Day for Cultural Diversity for Dialogue and Development
May 22SaturdayInternational Day for Biological Diversity
May 23SundayInternational Day to End Obstetric Fistula
May 24MondayInternational Day of the Markhor
May 25TuesdayWorld Football Day
May 29SaturdayInternational Day of UN Peacekeepers
May 30SundayInternational Day of Potato
May 31MondayWorld No-Tobacco Day

International days in June 2027

June 2027 has 33 international days, the most of any month. The table below lists them with their weekdays.

DateDayInternational day
June 1TuesdayGlobal Day of Parents
June 3ThursdayWorld Bicycle Day
June 4FridayInternational Day of Innocent Children Victims of Aggression
June 5SaturdayWorld Environment Day
June 5SaturdayInternational Day for the Fight against Illegal, Unreported and Unregulated Fishing
June 6SundayRussian Language Day
June 7MondayWorld Food Safety Day
June 8TuesdayWorld Oceans Day
June 10ThursdayInternational Day for Dialogue among Civilizations
June 11FridayInternational Day of Play
June 12SaturdayWorld Day Against Child Labour
June 13SundayInternational Albinism Awareness Day
June 14MondayWorld Blood Donor Day
June 15TuesdayWorld Elder Abuse Awareness Day
June 16WednesdayInternational Day of Family Remittances
June 17ThursdayWorld Day to Combat Desertification and Drought
June 18FridaySustainable Gastronomy Day
June 18FridayInternational Day for Countering Hate Speech
June 19SaturdayInternational Day for the Elimination of Sexual Violence in Conflict
June 20SundayWorld Refugee Day
June 21MondayInternational Day of Yoga
June 21MondayInternational Day of the Celebration of the Solstice
June 23WednesdayUnited Nations Public Service Day
June 23WednesdayInternational Widows’ Day
June 24ThursdayInternational Day of Women in Diplomacy
June 25FridayDay of the Seafarer
June 26SaturdayInternational Day against Drug Abuse and Illicit Trafficking
June 26SaturdayUnited Nations International Day in Support of Victims of Torture
June 27SundayInternational Day of Deafblindness
June 27SundayMicro-, Small and Medium-sized Enterprises Day
June 29TuesdayInternational Day of the Tropics
June 30WednesdayInternational Asteroid Day
June 30WednesdayInternational Day of Parliamentarism

International days in July 2027

July 2027 has 18 international days. The International Day of Cooperatives falls on the first Saturday of July, which is July 3 in 2027.

DateDayInternational day
July 3SaturdayInternational Day of Cooperatives †
July 6TuesdayWorld Rural Development Day
July 7WednesdayWorld Kiswahili Language Day
July 11SundayInternational Day of Reflection and Commemoration of the 1995 Genocide in Srebrenica
July 11SundayWorld Population Day
July 11SundayWorld Horse Day
July 12MondayInternational Day of Combating Sand and Dust Storms
July 12MondayInternational Day of Hope
July 15ThursdayWorld Youth Skills Day
July 18SundayNelson Mandela International Day
July 20TuesdayWorld Chess Day
July 20TuesdayInternational Moon Day
July 25SundayInternational Day of Women and Girls of African Descent
July 25SundayWorld Drowning Prevention Day
July 25SundayInternational Day for Judicial Well-being
July 28WednesdayWorld Hepatitis Day
July 30FridayInternational Day of Friendship
July 30FridayWorld Day against Trafficking in Persons

International days in August 2027

August 2027 has 13 international days. The table below lists them with their weekdays.

DateDayInternational day
August 6FridayInternational Day of Awareness of the Special Development Needs and Challenges of Landlocked Developing Countries
August 9MondayInternational Day of the World’s Indigenous Peoples
August 11WednesdayWorld Steelpan Day
August 12ThursdayInternational Youth Day
August 19ThursdayWorld Humanitarian Day
August 21SaturdayInternational Day of Remembrance and Tribute to the Victims of Terrorism
August 22SundayInternational Day Commemorating the Victims of Acts of Violence Based on Religion or Belief
August 23MondayInternational Day for the Remembrance of the Slave Trade and Its Abolition
August 27FridayWorld Lake Day
August 29SundayInternational Day against Nuclear Tests
August 30MondayInternational Day of the Victims of Enforced Disappearances
August 31TuesdayInternational Day for People of African Descent
August 31TuesdayInternational Day of Safe, Secure and Trustworthy Artificial Intelligence

International days in September 2027

September 2027 has 23 international days. World Maritime Day is set each year by the International Maritime Organization and is usually held on the last Thursday of September, which is September 30 in 2027.

DateDayInternational day
September 5SundayInternational Day of Charity
September 5SundayInternational Day of the World’s Indigenous Women and Girls
September 7TuesdayInternational Day of Clean Air for Blue Skies
September 7TuesdayInternational Day of Police Cooperation
September 7TuesdayWorld Duchenne Awareness Day
September 8WednesdayInternational Literacy Day
September 9ThursdayInternational Day to Protect Education from Attack
September 12SundayUnited Nations Day for South-South Cooperation
September 15WednesdayInternational Day of Democracy
September 16ThursdayInternational Day of Science, Technology and Innovation for the South
September 16ThursdayInternational Day for Interventional Cardiology
September 16ThursdayInternational Day for the Preservation of the Ozone Layer
September 17FridayWorld Patient Safety Day
September 18SaturdayInternational Equal Pay Day
September 20MondayWorld Cleanup Day
September 21TuesdayInternational Day of Peace
September 23ThursdayInternational Day of Sign Languages
September 26SundayInternational Day for the Total Elimination of Nuclear Weapons
September 27MondayWorld Tourism Day
September 28TuesdayInternational Day for Universal Access to Information
September 29WednesdayInternational Day of Awareness of Food Loss and Waste
September 30ThursdayWorld Maritime Day †
September 30ThursdayInternational Translation Day

International days in October 2027

October 2027 has 20 international days, including World Habitat Day on the first Monday, October 4, and the second World Migratory Bird Day on Saturday, October 9.

DateDayInternational day
October 1FridayInternational Coffee Day
October 1FridayInternational Day of Older Persons
October 2SaturdayInternational Day of Non-Violence
October 4MondayWorld Habitat Day †
October 5TuesdayWorld Teachers’ Day
October 7ThursdayWorld Cotton Day
October 9SaturdayWorld Post Day
October 9SaturdayWorld Migratory Bird Day (October) †
October 10SundayWorld Mental Health Day
October 11MondayInternational Day of the Girl Child
October 13WednesdayInternational Day for Disaster Risk Reduction
October 15FridayInternational Day of Rural Women
October 16SaturdayWorld Food Day
October 17SundayInternational Day for the Eradication of Poverty
October 23SaturdayInternational Day of the Snow Leopard
October 24SundayUnited Nations Day
October 24SundayWorld Development Information Day
October 27WednesdayWorld Day for Audiovisual Heritage
October 29FridayInternational Day of Care and Support
October 31SundayWorld Cities Day

International days in November 2027

November 2027 has 20 international days. The World Day of Remembrance for Road Traffic Victims falls on the third Sunday, November 21, the same day as World Television Day.

DateDayInternational day
November 2TuesdayInternational Day to End Impunity for Crimes against Journalists
November 5FridayInternational Day for Preventing the Exploitation of the Environment in War and Armed Conflict
November 9TuesdayWorld Science Day for Peace and Development
November 10WednesdayWorld Diabetes Day
November 14SundayInternational Day for the Prevention of and Fight against All Forms of Transnational Organized Crime
November 16TuesdayInternational Day of the Mediterranean Diet
November 16TuesdayInternational Day for Tolerance
November 18ThursdayWorld Philosophy Day
November 18ThursdayWorld Day for the Prevention of and Healing from Child Sexual Exploitation, Abuse and Violence
November 19FridayWorld Toilet Day
November 20SaturdayAfrica Industrialization Day
November 20SaturdayWorld Children’s Day
November 21SundayWorld Day of Remembrance for Road Traffic Victims †
November 21SundayWorld Television Day
November 24WednesdayWorld Conjoined Twins Day
November 25ThursdayInternational Day for the Elimination of Violence against Women
November 26FridayWorld Sustainable Transport Day
November 27SaturdayInternational Day for the Elimination of Child, Early and Forced Marriage
November 29MondayInternational Day of Solidarity with the Palestinian People
November 30TuesdayDay of Remembrance for all Victims of Chemical Warfare

International days in December 2027

December 2027 has 24 international days. The table below lists them with their weekdays.

DateDayInternational day
December 1WednesdayWorld AIDS Day
December 2ThursdayInternational Day for the Abolition of Slavery
December 3FridayInternational Day of Persons with Disabilities
December 4SaturdayInternational Day of Banks
December 4SaturdayInternational Day Against Unilateral Coercive Measures
December 5SundayInternational Volunteer Day for Economic and Social Development
December 5SundayWorld Soil Day
December 7TuesdayInternational Civil Aviation Day
December 9ThursdayInternational Day of Commemoration and Dignity of the Victims of the Crime of Genocide and of the Prevention of this Crime
December 9ThursdayInternational Anti-Corruption Day
December 10FridayHuman Rights Day
December 11SaturdayInternational Mountain Day
December 12SundayInternational Day of Neutrality
December 12SundayInternational Universal Health Coverage Day
December 14TuesdayInternational Day against Colonialism in All its Forms and Manifestations
December 15WednesdayWorld Turkic Language Family Day
December 18SaturdayInternational Migrants Day
December 18SaturdayArabic Language Day
December 19SundayInternational Day of Recognition for Women Searchers of Missing Persons
December 20MondayInternational Human Solidarity Day
December 21TuesdayWorld Meditation Day
December 21TuesdayWorld Basketball Day
December 24FridayInternational Anti-Cybercrime Day
December 27MondayInternational Day of Epidemic Preparedness

Moveable international days in 2027

Seven international day dates in 2027 follow a rule rather than a fixed date, so they move every year. The table below gives each rule and the resulting 2027 date.

International dayRule2027 date
World Migratory Bird Day (May)Second Saturday in MaySaturday, May 8
Vesak, the Day of the Full MoonFull moon day of May; observed dates vary by countryThursday, May 20
International Day of CooperativesFirst Saturday in JulySaturday, July 3
World Maritime DaySet each year by the International Maritime Organization, usually the last Thursday of SeptemberThursday, September 30
World Habitat DayFirst Monday in OctoberMonday, October 4
World Migratory Bird Day (October)Second Saturday in OctoberSaturday, October 9
World Day of Remembrance for Road Traffic VictimsThird Sunday in NovemberSunday, November 21

Vesak is the hardest to pin down. The UN marks it on the full moon of May, which falls at 10:59 UTC on Thursday, May 20, 2027. Buddhist communities in different countries may hold Vesak on a different day, depending on their lunar calendar and time zone.

The six UN language days

The UN marks each of its six official languages with its own day, and four of the six fall in spring. The table below gives their 2027 dates.

Language dayDate2027 weekday
French Language DayMarch 20Saturday
Chinese Language DayApril 20Tuesday
English Language DayApril 23Friday
Spanish Language DayApril 23Friday
Russian Language DayJune 6Sunday
Arabic Language DayDecember 18Saturday

The UN calendar also includes days for languages that are not official UN languages: World Portuguese Language Day on May 5, World Kiswahili Language Day on July 7 and World Turkic Language Family Day on December 15.

International weeks in 2027

The UN also recognises ten international weeks. The table below lists them with the weekday each starts on in 2027.

International weekDates2027 start
World Interfaith Harmony WeekFebruary 1–7Monday, February 1
Week of Solidarity with the Peoples Struggling against Racism and Racial DiscriminationMarch 21–27Sunday, March 21
World Immunization WeekApril 24–30Saturday, April 24
Week of Solidarity with the Peoples of Non-Self-Governing TerritoriesMay 25–31Tuesday, May 25
World Breastfeeding WeekAugust 1–7Sunday, August 1
World Space WeekOctober 4–10Monday, October 4
Disarmament WeekOctober 24–30Sunday, October 24
Global Media and Information Literacy WeekOctober 24–31Sunday, October 24
International Week of Science and PeaceNovember 9–15Tuesday, November 9
World Antimicrobial Resistance Awareness WeekNovember 18–24Thursday, November 18

Other observances on Datescal that are not UN days

Several well-known observances are often listed as international days but are not on the UN’s list. They are set by other organisations or by individual countries. The table below lists those covered on Datescal.

Observance2027 dateSet by
Earth Day 2027Thursday, April 22Earth Day Network; the UN marks the same date as International Mother Earth Day
Mother’s Day 2027Sunday, May 9 in the United States; dates vary by countryNational custom
European Day of Parks 2027Monday, May 24EUROPARC Federation
World Otter Day 2027Wednesday, May 26 (last Wednesday of May)International Otter Survival Fund
International Day for the Conservation of the Mangrove Ecosystem 2027Monday, July 26UNESCO

How to use this calendar

Use the month tables to find what is observed on a given date, and the linked pages for full details on individual days. The steps below cover the most common uses.

  1. To find today’s international day, go to the current month’s table and look up the date. Several dates carry more than one observance.
  2. To plan an event or campaign, check the weekday column. One in three international days falls on a weekend in 2027, so events may need to move to a weekday.
  3. For moveable days, use the moveable days table, as their dates change every year.
  4. For themes, history, and how a day is observed, open the linked page where one exists.

Dates in this calendar are the UN’s official dates. Observances begin at local midnight in each country, so the same day starts about 26 hours earlier in Kiribati than in American Samoa.

Who decides international days?

Most international days are proclaimed by the UN General Assembly through a resolution, and others are set by UN specialised agencies such as UNESCO, the World Health Organization and the Food and Agriculture Organization.

In the tables, days such as World Health Day come from the World Health Organization, and days such as World Poetry Day and the International Day of Light come from UNESCO.

A country or group proposes a day, member states negotiate the text, and the resolution or agency decision fixes the date.

New days are added most years. Days added in recent years include World Meditation Day and World Basketball Day, both on December 21, and the International Day of Safe, Secure and Trustworthy Artificial Intelligence on August 31.

What international days are not

International days are UN awareness observances, not public holidays. No international day gives an automatic day off work.

Type of daySet byDay off work?Example
UN international dayUN General Assembly or a UN agencyNoInternational Day of Peace, September 21
National dayA single country’s governmentOften yesIndependence days
Public holidayA national or regional governmentYesChristmas Day in many countries
“National day” awareness dayCompanies, brands or individualsNoNational Coffee Day in the United States
Non-UN international observanceNGOs and federationsNoWorld Otter Day, European Day of Parks

Frequently asked questions

How many international days are there in 2027?

The UN’s list for 2027 contains 236 international days, falling on 237 dates because World Migratory Bird Day is held twice, in May and October. June has the most, with 33, and January the fewest, with 5. The UN also recognises 10 international weeks.

What international day is today?

To find today’s international day, look up today’s date in the month tables above. Most dates carry one observance, some carry two or three, and Sunday, March 21, 2027, carries six. Many dates have no UN international day at all.

Which date has the most international days in 2027?

Sunday, March 21, 2027, has the most, with six: World Day for Glaciers, International Day of Forests, International Day for the Elimination of Racial Discrimination, World Poetry Day, International Day of Nowruz and World Down Syndrome Day. Friday, April 23, has four.

Are international days public holidays?

No. International days are UN awareness observances, not public holidays, and none of them gives an automatic day off. Some coincide with national holidays in particular countries, but the international day itself carries no legal status. In 2027, 80 international days fall on a Saturday or Sunday.

Who creates international days?

The UN General Assembly creates most international days through a resolution, usually after a member state proposes one. UN specialised agencies, including UNESCO, the World Health Organization and the Food and Agriculture Organization, set others. Each designation fixes the date, which normally stays the same every year.

Which international days change date every year?

Seven international day dates follow a rule rather than a fixed date. In 2027, these are World Migratory Bird Day on May 8 and October 9, Vesak on May 20, the International Day of Cooperatives on July 3, World Maritime Day on September 30, World Habitat Day on October 4, and the World Day of Remembrance for Road Traffic Victims on November 21.

Get in Touch

LEAVE A REPLY

Please enter your comment!
Please enter your name here

spot_imgspot_img

Related Articles

spot_img

Get in Touch

0FansLike
0FollowersFollow
0SubscribersSubscribe

Latest Posts