World Mosquito Day, observed annually on 20 August, is a commemoration of British doctor Sir Ronald Ross's discovery in 1897 that female mosquitoes transmit malaria between humans.

World Mosquito Day

World Wide Web Day is a global celebration dedicated to web browsing, the online activity that brings the world at your fingertips and a wealth of knowledge at your feet.

World Wide Web Day

In China, every 1 August is Armed Forces Day, or “Army Day” for short. The day commemorates the founding of the PLA back in 1927, around 20 years before the Chinese mainland finally fell under the complete control of The People’s Republic of China.

Army Day -China

The Swiss National Day is the national holiday of Switzerland, set on 1 August. Although the founding of the Swiss Confederacy was first celebrated on this date in 1891 and annually since 1899, it has only been an official holiday since 1994.

Swiss National Day

National Girlfriends Day encourages women across the U.S. to get together and celebrate their special bond of friendship. #girlfriend #galpal #bestie #nationalgirlfriendday #bff

National Girlfriend Day

International Beer Day (IBD) is a celebration on the first Friday of every August founded in 2007 in Santa Cruz, California by Jesse Avshalomov.

International Beer Day

National Mead Day is celebrated to increase mead awareness and foster camaraderie among mead makers.

Mead Day

White Wine Day was created to help celebrate this wine that stands out from all others.

White Wine Day

Picnic Day is a public holiday in the Northern Territory of Australia which takes place every year on the first Monday of August.

Picnic Day

Civic Holiday (Many regions)

August 5th National Underwear Day provides an opportunity to wear their favorite undergarments. Whether boxers, briefs, panties, tighty-whities, our underthings provide a layer of comfort.

National Underwear Day

The summer bank holiday is on the first Monday of August in Scotland and the last Monday of August in England, Wales and Northern Ireland.

Summer Bank Holiday (Scotland)

The Colony of Jamaica gained independence from the United Kingdom on 6 August 1962. In Jamaica, this date is celebrated as Independence Day, a national holiday.

Independence Day -Jamaica

Pop a mint and smile on National Fresh Breath Day observed annually on August 6th.  The day urges appreciation of oral hygiene and its importance.

National Fresh Breath Day

Purple Heart Day on August 7 commemorates the creation of the oldest American military decoration for military merit.

Purple Heart Day

After being controlled by the French as a colony since the end of the 1880s, Côte d’Ivoire acquired its independence on August 7, 1960. On this day Ivoirians celebrate their independence from France and the country’s first president.

Independence Day - Cote d'Ivoire

Tisha B'Av is an annual fast day in Judaism, on which a number of disasters in Jewish history occurred, primarily the destruction of both Solomon's Temple by the Neo-Babylonian Empire and the Second Temple by the Roman Empire in Jerusalem.

Tish'a B'Av

International Cat Day is a full 24 hours of recognition and veneration of one of humanity’s oldest and most beloved pets. It was created in 2002 by the International Fund for Animal Welfare. This #CatDay, roll out the red carpet for your feline friends, or volunteer at your local pet shelter!

International Cat Day

Book Lovers Day is celebrated on August 9 every year. This is an unofficial holiday observed to encourage bibliophiles to celebrate reading and literature.
#NationalBookLoversDay

National Book Lovers Day

Hari Merdeka, also known as Hari Kebangsaan, refers to the day when the Federation of Malaya's independence from the British Empire was officially declared. On 31 August 1957, the declaration was read by Tunku Abdul Rahman in the presence of Malay Rulers, federal government, and foreign dignitaries

National Day

The National Day of Singapore is celebrated every year on August 9, in commemoration of Singapore's independence from Malaysia in the year 1965. This holiday features a National Day Parade, an address by the Prime Minister of Singapore, and fireworks celebrations

National Day -Singapore

On August 10th, National Lazy Day gives us permission to relax and kickback. So, we’re going to be a bit lazy here.

National Lazy Day

In May 2014, it was announced that Mountain Day will be celebrated as a public holiday every August 11, beginning in 2016. The legislation states that the holiday is to provide “opportunities to get familiar with mountains and appreciate blessings from mountains.”

Mountain Day

International Youth Day (IYD) is an awareness day designated by the United Nations. The purpose of the day is to draw attention to a given set of cultural and legal issues surrounding youth. The first IYD was observed on 12 August, 2000.

International Youth Day

In Thailand, the Queen of former King Bhumibol is honoured with a public holiday on her birthday.

Her Majesty the Queen's Birthday Holiday

International Left Handers Day is observed annually on August 13 to celebrate the uniqueness and differences of the left handers.

International Lefthanders Day

Obon is a Japanese Buddhist custom to honor the spirits of one's ancestors. This Buddhist-Confucian custom has evolved into a family reunion holiday during which people return to ancestral family places and visit and clean their ancestors' graves.

Obon - Buddhist

National Creamsicle Day is observed annually on August 14. This is a day to enjoy this refreshing summertime orange and vanilla treat.

National Creamsicle Day

Ekka Wednesday is the 6th day of The Royal Queensland Show and is a public holiday for people living and working within Brisbane city. It is also known as Ekka People’s Day and Brisbane Show Day.

Ekka Wednesday

Independence Day is annually celebrated on 15 August, as a national holiday in India commemorating the nation's independence from the United Kingdom on 15 August 1947, the UK Parliament passed the Indian Independence Act 1947 transferring legislative sovereignty to the Indian Constituent Assembly.

Independence Day -India

The Day of Assumption, also known as the Miracle upon the Vistula, is a national holiday in Poland on August 15 each year.

Assumption of Mary

The National Liberation Day of Korea is a holiday celebrated annually on August 15 in both North and South Korea. It commemorates Victory over Japan Day, when U.S. and Soviet forces ended the decades-long Japanese occupation of Korea.

Liberation Day -South Korea

The Feast of the Assumption of Mary (L'Assomption de Marie) celebrates the Catholic belief that the Virgin Mary's spirit and body was assumed to heaven. It is an important occasion for village and church festivals and is a public holiday in France.

Liberation Day

National Tell a Joke Day is observed annually on August 16th, and that’s no joke. This day will be filled with smiles and much laughter from morning till night as everyone share their jokes.

National Tell a Joke Day

The Borroloola Show is one of the smallest in the Northern Territory. The public holiday is held on the last Friday in June and is a holiday for the documented region around Borroloola.

Borroloola Show Day - Australia

Indonesian Independence Day

Independence Day is a public holiday in Gabon on 16th and 17th August. These public holidays follow Assumption on 15th August to create a three day break.

Independence Day -Gabon

Independence Day is a national holiday in Indonesia commemorating the anniversary of the Indonesia's Proclamation of Independence on 17 August 1945. It was made a national holiday by then-President Sukarno in 1953.

Independence Day -Indonesia

World Honey Bee Day, previously known as Honey Bee Awareness Day, is an idea put together by beekeepers in the USA, who petitioned for an official day to honour honey bees and beekeping.

World Honey Bee Day

Bad Poetry Day encourages you to give it a go anyway by putting pen to paper and writing some terrible verse.

Bad Poetry Day

Feast of Saint Maginus (Tarragona)

Afghan Independence Day is celebrated in Afghanistan on 19 August to commemorate the Anglo-Afghan Treaty of 1919 and relinquishment from protected state status.

Independence Day -Aghanistan

St. Stephen's Day, or the Day of the Wren, is an occasion to commemorate the life of St Stephen, a Christian martyr. Many people spend the day quietly with close friends or family.

Saint Stephen Day

The World Senior Citizen's Day is celebrated on the 21st of August each year. It was first proclaimed by the General Assembly of the United Nations on December 14, 1990.

World Senior Citizen Day

Ninoy Aquino Day is a national non-working holiday in the Philippines observed annually on August 21, commemorating the assassination of former Senator Benigno "Ninoy" Aquino, Jr. He was the husband of Corazon Aquino, who was later to become Philippine President.

Ninoy Aquino Day (PN)

August 22 celebrates National Be An Angel Day.  This is a day for celebrating those who do good deeds and are kind to others.

National Be an Angel Day

Ride the Wind Day is an excellent opportunity to marvel at all things flying, and perhaps take part in some flying yourself.

Ride the Wind Day

Independence Day of Ukraine is the main state holiday in modern Ukraine,[nb 1] celebrated on 24 August in commemoration of the Declaration of Independence of 1991.

Independence Day -Ukraine

International Strange Music Day was created by Patrick Grant, a New York musician. The premise is to get people to play and listen to types of music they have never experienced before.

International Strange Music Day

National Waffle Day honors the anniversary of the patenting of the first US waffle iron invented by Cornelius Swarthout of Troy, New York, and is celebrated on 24th August. #passthesyrup

National Waffle Day (USA)

Whiskey Sour Day is your chance to experience this fantastic drink, and discover what your favorite variation is.

Whiskey Sours Day

National Heroes' Day is a national holiday of Philippines, celebrated to pay homage to the National Heroes of the country. Every year this day falls on the fourth Monday of August.

National Heroes Day

Summer Bank Holiday (ENG, NIR, WAL)

August 27th it is National Just Because Day.  Feel free to celebrate this day any way you choose.  Just because.

National Just Because Day

August 28 is Bow Tie Day, an annual holiday that celebrates the elegant fashion accessory usually worn by men at formal occasions.

Bow Tie Day

Individual Rights Day marks the birth date of John Locke, the philosopher who first prominently argued that a human being has a fundamental property right based on his status as a person.

Individual Rights Day

30 August has been celebrated as International Whale Shark Day since 2012 in order to raise awareness about these giant species of sharks.

International Whale Shark Day

Kyrgyzstan celebrates its Independence Day on 31 August to remember the day in 1991 when Kyrgyzstan officially left the USSR.

Independence Day -Kygyrzstan

International Bacon Day or Bacon Day is an unofficial observance, often celebrated on the Saturday before US Labor Day.

International Bacon Day

Trail Mix Day is all about creating good trail mix and testing it out on the road.

Trail-Mix Day

International Overdose Awareness Day is a global campaign that works towards preventing overdose, reducing the stigma associated with it, and providing support to families and loved ones of overdose victims. The unofficial awareness day is observed every year on August 31.