1 August – National Mountain Climbing Day is celebrated to honour two young climbers who scaled the 46 High Peaks of the Adirondack Mountains.
1 August – Yorkshire Day marks the celebration of history and heritage in the UK’s largest historic county.
1 August – World Lung Cancer Day spreads awareness about lung cancer risks, early detection, and support.
1 August – World Wide Web Day honours the invention of the internet and the man behind it, Tim Berners-Lee.
3 August – National Watermelon Day celebrates the refreshing summer fruit enjoyed across the US.
3 August – Cloves Syndrome Awareness Day raises awareness about a rare genetic condition affecting growth and blood vessels.
3 August – Friendship Day is observed on the first Sunday of August to celebrate bonds of friendship.
4 August – Assistance Dog Day recognises specially trained dogs that help people with disabilities.
4 August – U.S. Coast Guard Day commemorates the founding of the Coast Guard in 1790.
6 August – Hiroshima Day remembers the atomic bombing of Hiroshima in 1945.
7 August – National Handloom Day celebrates the handloom industry and its weavers in India.
8 August – Quit India Movement Day recalls Mahatma Gandhi’s historic 1942 call for British withdrawal.
9 August – Nagasaki Day marks the atomic bombing of Nagasaki three days after Hiroshima.
9 August – Rakshabandhan is a Hindu festival that celebrates the protective bond between siblings.
9 August – International Day of the World’s Indigenous Peoples promotes the rights and cultures of indigenous communities.
9 August – National Book Lover’s Day encourages reading and appreciation of books.
9 August – World Sanskrit Day honours the ancient and classical Indian language, Sanskrit.
9 August – Narali Purnima is a coastal festival in Maharashtra where coconuts are offered to the sea for protection.
10 August – World Lion Day spreads awareness about the importance of lion conservation.
10 August – World Biofuel Day highlights the role of renewable fuels in reducing dependence on fossil fuels.
12 August – International Youth Day promotes youth development and active participation in society.
12 August – World Elephant Day calls for global efforts to protect and conserve elephants.
13 August – International Lefthanders Day acknowledges the uniqueness and challenges of left-handed individuals.
13 August – World Organ Donation Day promotes the importance of saving lives through organ donation.
14 August – Youm-e-Azadi marks Pakistan’s Independence Day from British rule in 1947.
15 August – National Mourning Day in Bangladesh honours the assassination of Sheikh Mujibur Rahman.
15 August – Independence Day in India celebrates the country’s freedom from British colonial rule.
15 August – Day of the Assumption of the Virgin Mary commemorates the Christian belief of Mary’s ascension to heaven.
16 August – Bennington Battle Day remembers a key battle during the American Revolution.
17 August – Indonesian Independence Day celebrates the nation’s liberation from Dutch rule in 1945.
17 August – Gabon Independence Day marks the country’s independence from France in 1960.
17 August – Afghanistan Independence Day commemorates the 1919 treaty that ended British control over Afghan foreign affairs.
19 August – World Photography Day recognises the art, history, and science of photography.
19 August – World Humanitarian Day pays tribute to humanitarian workers and their efforts in crisis zones.
19 August – Sanskrit Diwas promotes the preservation and use of the Sanskrit language.
20 August – World Mosquito Day marks the discovery that mosquitoes transmit malaria.
20 August – Sadbhavna Diwas honours former Prime Minister Rajiv Gandhi and promotes harmony and goodwill.
20 August – Indian Akshay Urja Day spreads awareness about renewable energy in India.
23 August – International Day for the Remembrance of the Slave Trade and its Abolition reflects on the legacy of slavery.
23 August – European Day of Remembrance for Victims of Stalinism and Nazism remembers victims of totalitarian regimes.
23 August – ISRO Day marks the successful moon landing by Chandrayaan-3 on the lunar South Pole.
26 August – Women’s Equality Day celebrates the granting of voting rights to women in the United States.
26 August – International Dog Day promotes adoption and awareness of the welfare of dogs.
26 August – Mother Teresa Anniversary honours the birth of the Nobel Peace Prize winner known for her humanitarian work.
26 August – Hartalika Teej is a fasting festival observed by women for marital bliss and devotion to Goddess Parvati.
26–27 August – Ganesh Chaturthi celebrates the birth of Lord Ganesha with prayers, processions, and sweets.
29 August – National Sports Day in India celebrates the birthday of legendary hockey player Major Dhyan Chand.
30 August – Small Industry Day supports and recognises the contribution of small-scale industries in economic growth.
31 August – Hari Merdeka marks Malaysia’s National Day, celebrating its independence from colonial rule.