There are 365 days in a calendar year. 

 Just suppose, If every day is productive and celebrate. World will be so active and amazing if every day of the year is dedicated to some cause. 

United Nations is most authentic body to declare as world celebration day and then all member countries observe these days. Currently, there are around 157 days that are officially celebrated at United Nations Platform. It means these 157 days are approved as official international celebration days. Then there are other international bodies, communities and other forums that introduce and celebrate different days. These bodies include Amnesty International, European Union, Catholic Church and different NGOs celebrating different causes on these days.  

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Our list of famous International Day, their origin and history is as below

10 January – World Hindi Day (Hindi Divas)

Observed: BY Indian Government & Public. Due to being an influencing economy and citizens worldwide, this event is largely celebrated

Significance: Celebration of Adopting Hindi as official language of India

History: Constitution assembly of 1949 adopted Hindi as official language

Activities: Local event for language promotion. Presentation of awards by state to people having contribution in promotion of language like in literature, poetry and journalism. 

21 January – International Hug Day

Observed: Especially in USA as a secular event

Significance: Celebrated to encourage people to do more hugging with family and friends to promote more affection. 

History: First time celebrated in January 21, 1986 in Clio, Michigan, USA. The idea was to promote love and affection for family and friends as American people are generally considered reluctant and embarrassed to show affection in public.

Activities: Hugging with family and friend. There is a caution, you should first inform people about your intention of hugging them.

26 January – International Customs Day

Observed: Observed World Wide

Significance: Custom day is celebrated to appreciate and acknowledge services of custom officials for securing countries border and economy. Its purpose is to highlight their job difficulties and creating awareness to provide custom officials more facilities. 

History: Customs Cooperation Council was established on 26 January,1953. It’s a tradition to celebrate as a remembrance of purpose.

Activities: Workshops and seminars are conducted for awareness purpose. Further employees aware and appreciation ceremonies are also conducted by custom agencies to encourage and motivate employees. 

04 February – World Cancer Day

Observed: Observed World Wide

Significance: Create awareness of life threatening disease of cancer. It further aims to pressurize government bodies to take sufficient steps to prevent this disease.  

History: World cancer day was first observed in 2000 at at Paris summit on cancer

Activities: As cancer is growing rapidly worldwide so its awareness campaign has become a global phenomena. There are multiple activities conducted on this day. One of the important activities is #NoHairSelfie where people support and give courage to cancer patients by shaving their heads.  

14 February – Valentine Day

Observed: Observed World Wide

Significance: It has become world’s largest event to show love and affection.

History: I was originally celebrated as western religious feast day of St. Valentine. There are different legends associated with this day and St. Valentine. It has not taken more modern shape and become more commercial and secular event than a religious one. 

Activities: Valentine day has become a commercial event so it is now celebrated world wide. Valentine parties are celebrated by lovers, friends and families. Flowers and gifts have become essential part of this event and red color is largely associated with this day as a symbol of love. 

20 February – World Day of Social Justice

Observed: Observed World Wide

Significance: It is celebrated to address social issues like poverty, unemployment and exclusion

History: UN decided on 26 November 2007 to celebrate this day to address social issues. This day was first celebrated in 2009. 

Activities: Many NGOs are working worldwide to address issue of poverty, unemployment and social injustice in shape of exclusion. Difference awareness campaign are run through media, workshops and seminars to remove gender, age, cast, race, disability or any other barrier in gross welfare of society.

21 February – International Mother Language Day

Observed: Observed World Wide

Significance: It is celebrated to promote multilingualism by creating awareness of linguistic and cultural diversity. 

History: This day was approved by United Nations as International Day of celebration in 2008 although it was suggested by UNESCO on November 17, 1999.

It is celebrated in memory of Bengali Language Movement of 1952. This day is public holiday in Bangladesh since 1953 and known as “Shohid Dibosh” (Martyr Day).

Activities: Different countries celebrate this day separately. There are conducted themed events at UNESCO Headquarter in Paris. 

27 February – World NGO Day

Observed: Observed World Wide by at least 89 countries 

Significance: World NGOs Day is celebrated to inspire people to participate more actively in humanitarian activities. 

History: Introduced by 12 member countries of “Council of Baltic Sea States” Forum in 2010. It was later recognized by United nations, European Union and other international organization in 2014.

Activities: NGOs, NPO and charitable organization around the globe celebrate this day in the name of humanity to promote charity culture. Different seminars are conducted to make people aware about NGOs activities. 

27 February – International Polar Bear Day

Observed: Observed in Western Countries and organized by NGO “Polar Bear International” 

Significance & Brief History: Polar Bear is an endangered species due to global warming and reduced ice level in arctic regions.

It is celebrated to create awareness about reducing population of Polar Bear due to global warming threats. This day is also gaining importance due to raising issue to climate change and endangered species. 

Activities: Many Zoos participate in this day celebration to educate people about affect of climate change on Polar Bear Population. 

01 March – World Compliment Day

Observed: Observed in Many European Countries especially Netherlands, Norway & Belgium.

Significance: Recognition and appreciation is basic human need. He wants to be acknowledged for their contributions. So this day is celebrated to compliments for their role and contribution. 

Brief History: World Compliment Day was introduced in Netherlands by “Poor Poortvliet” in 2001 in an effort to letting people know that we are thankful to their good work.

It has gained popularity from then and now celebrated in many European Countries. 

Activities: It is advised to pay genuine and sincere compliment to at least three people in your surroundings to make that day “Most Positive Day in The World”.

08 March – International Women Day

Observed: Celebrated World Wide 

Significance: It is celebrated as a global phenomena in Women’s Right Movement.

History: First Women’s day was celebrated in 1909 by Socialist Party of America on suggestion of “Theresa Malkiel”. On 8 march, 1917, women gained right to vote and this day was celebrated as holiday from then.

In 1975, United Nations adopted this day as Official International Women’s Day.

Activities: It is celebrated as womanhood in some countries. In other countries, it is celebrated as a protest due to limitations and restrictions on women’s liberty and rights.

We must say that International Women’s Day is the most promoted and celebrated day in the world among all days.

14 March- International Pie Day

Observed: Largely celebrated in USA 

Significance: It is an annual celebration of arithmetical constant Pi (π). Pi day is celebrated on 14 March (14 date of 3rd month) due to the fact that 3, 1 and 4 are first three digits of Pi (π). 

History: First time officially celebrated in 1988 by physicist Larry Shaw at “San Francisco Exploratorium”. USA House of representatives recognized it as Official Pie Day in March 14, 2009. 

Activities: It is celebrated by eating Pie and discussing about mathematical constant PI. 

20 March – International Day of Happiness

Observed: Observed World Wide

Significance: Pursuit of Happiness is ultimate human objective and is a basic human right.  

History: Suggested by UN special advisor Jamie Illien in 2011 to mobilize global happiness movement, United Nations approved it on June 28, 2012. International day of happiness was first celebrated on 20 March, 2013.

Activities: Different NGOs are working for Global happiness Movement and this day is a large celebration for then. Further, sponsored events and celebration are conducted under UN. 

21 March – World Poetry Day

Observed: Observed World Wide

Significance: It is celebrated to promote poetry in reading, writing and publishing. 

History: Poetry Day was approved by UN in 1999 to promote linguistic diversity and provide opportunity to endangered languages to be remembered withing their societies.

Activities: Different countries celebrate this day in different days and in different ways. Poetry classes are conducted for children. Different organizations conduct programs where poets are invited to present their work. 

21 March – International Day of Forests

Observed: Observed world wide

Significance: One third of world plantation food is wasted every year. Further global warming is a rising threat. This day is important to make people aware about importance of plants for humans’ future. 

History: Officially approved by UN on November 28, 2012 and observed for the first time in 2013. Plants are necessary to provide basic resources of human life i.e oxygen and food.

Each year 13 million hectares land is wasted. Global warming and deforestation are becoming international threats so this day was introduced to create awareness.

Activities: Governments and NGOs plant a tree on this day to make people aware.

22 March – World Water Day

Observed: Observed World Wide

Significance: Highlight importance and sustainable provision and management of fresh water. Water is basic ingredient of human body and we can not survive without it.

History: Keeping in view scare water resources, its wastage and and future shortage, UN started to celebrate this day in 1993. 

Activities: Each year a different theme is designed by UN to celebrate this day. Different educational and musical event are conducted for awareness.

Different lobbyist work for fund raising for construction and management of water resources.  

24 March – World Tuberculosis (TB) Day

Observed: Observed World Wide

Significance: Awareness and elimination of this epidemic disease

History: It is one of eight global health campaigns from WHO. 24 March 1882 was the date when cause of this infection was discovered by scientists. On 100th year in 1982, this day was suggested to be officially celebrated as World Tuberculosis Day.  

Activities: Each year a different theme is designed by UN to celebrate this day. Different educational and musical event are conducted for awareness. Theme for year 2018 was “Wanted: Leaders for a TB-free world”.

01 April – April Fool Day

Observed: Observed as an informal event world wide

Significance: It is celebrated as a fun day. 

History: Making fool has been an historic phenomena but its confirm history or origin is not known 

Activities: Small harmless jokes and hoax are made and thrown on some victim. Once captured, victims is exposed by shouting April Fool. Some newspapers publish fake news on this day and on next day it is revealed. 

02 April – Autism Awareness Day

Observed: Observed World Wide

Significance: Autism is a mental disorder. It is celebrated to raise awareness about disorder and patients.  

History: Officially recognized and approved as International Autism Awareness Day by UN in 2007. 

Activities: Each year a different theme is designed by UN to celebrate this day. 2018 theme was “Empowering Women and Girls with Autism”

06 April – International Sports Day

Observed: Observed World Wide

Significance: It is celebrated as “International Day of Sport for Development and Peace” under UN umbrella. Sports are believed to create harmony and peace between nations. 

History: 6 April was decided as International Sports Day in commemoration of first modern day Olympics games inaugurated at this date on 1896.

Activities: World’s leading sport celebrities participate in different events and programs to promote sports. 

07 April – World Health Day

Observed: Observed World Wide

Significance: It is celebrated to raise attention and awareness about global health issue. It is 

History: It is the top agenda of World Health organization. this day was first observed in 1950. 

Activities: Each year a different theme is designed to celebrate this dayWHO theme for 2018 was “Universal Health Coverage”. Different health campaigns and activities are conducted by health officials and related organizations on this day.

10 April – International Sibling Day

Observed: Observed World Wide in different dates. USA, UK, India & Australia observe 10 April. European countries observe this day on 31 May.

Significance: It is celebrated to respect and honor relationship of brothers and sisters. There is no doubt that siblings are most loving relationships after parents. 

History: USA recognized this day as official in 2005. Europe launched holiday on this day in 2014

Activities: Siblings celebrate this day by sharing cards, gifts and dinners.

11 April – World Parkinson Day

Observed: Observed largely in Europe

Significance: It is celebrated to raise awareness on Parkinson disease that millions of people are suffering from. Many people do not understand much about this disease until it become severe.

History: 11 April is date of birth of Dr. J Parkinson. He published his famous “Essay on Shaking Palsy” in 1817. His Paper first recognized and defined conditions that later known as Parkinson based on his name.

Activities: Marathon is conducted in many countries on this day to raise public awareness. A hashtag #UniteForParkinson’ is widely used on this day.

15 April – World Art Day

Observed: Observed by artist community under International Association of Art

Significance: It is celebrated to promote unique human ability of art 

History: This date is birthday of famous artist Leonardo Da Vinci. This day was approved to be celebrated by International Association of Art on April 15, 2012. 

Activities: Different activities are conducted like art galleries, special museum hours and events.  

22 April – World Earth Day

Observed: Observed World Wide

Significance: It is celebrated to support environmental protection. 

History: This day was first celebrated in 1970 but now it is observed by almost 193 countries. It is coordinated by “Earth Day Network” as world largest environment protection movement.

Main agenda of movement is climate change, plastic pollution and endangered species.

Activities: This day is celebrated in different ways including energy conservation, plantation, marathon, events, spending day with social welfare organizations and many other.

23 April – World Book and Copyright Day

Observed: Observed World Wide

Significance: It is celebrated to promote reading, writing and publishing of book. Further, Copy write has always been an issue for writers. This day help create awareness on morality and legal issue of copy right. 

History: This day was first celebrated on 23 April, 1995. This date was decided due to its significance. This date is marked as death anniversary of three great writers, William Shakespeare, Miguel de Cervantes and Inca Garcilaso de la Vega. 

Activities: Writers are given opportunity to present their work at official conferences and events. People in different countries celebrate World Book Day by sharing and exchanging books.   

25 April – World Malaria Day

Observed: Observed World Wide

Significance: This day is for the recognition of efforts made to control Malaria. Malaria cause around 600,000 deaths worldwide annually. This day is among 8 official WHO health days.

History: World Malaria Day was approved by WHO in May 2007. Previously, it was celebrated as African Malaria Day from 2001 because Africa is major victim of malaria. 

Activities: WHO sponsored health activities are conducted. Different awareness events are organized to educate people. WHO theme for year 2018 was “Ready to beat malaria”.

01 May – International Labor Day

Observed:  Observed World Wide

Significance:  It is also called Workers day, Labor day or May day and celebrated by labors & working classes. A holiday in generally observed most countries although USA & Canada observe labor day on first Monday of September.

This day has more significance in socialist and communist countries like Chine, Korea, Cuba & former Soviet Union states

History: Originally, this day was celebrated to commemorate the 1886 Haymarket Affair that was a strike with a demand to observe an official eight hours work day. Previously, there was not specific work hours limitations and labor had to do 10 to 16 hours work in unsafe conditions.

This strike was bombed by some unknown people that cause causalities of more then 100 people. May 1 was officially recognized as an international labor day in 1989 by The Second International.

Activities:  This days is generally and widely observed as a holiday throughout the work. Same day is celebrated in USA & Canada but on first Monday of September. Celebration are performed by cake cutting activities in offices, road marches and seminars by Labor Unions.

01 May – World Law Day

Observed: 

Significance: 

History: 

Activities: 

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