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This month was originally named Sextilis in Latin, because it was the sixth month in the original ten-month Roman calendar under Romulus in 753 BCE, when March was the first month of the year. About 700 BCE it became the eighth month when January and February were added to the year before March by King Numa Pompilius, who also gave it 29 days. Julius Caesar added two days when he created the Julian calendar in 45 BCE giving it its modern length of 31 days. In 8 BCE it was renamed in honor of Augustus, who did not take a day from February (see the debunked theory on month lengths).
In common years no other month starts on the same day of the week as August, though in leap years February starts on the same day.
Events in August
- In the neopagan wheel of the year August begins at or near Lughnasadh in the northern hemisphere and Imbolc in the southern hemisphere.
- Some of Ireland's most famous battles have been fought in this month. They include: the Second Battle of Athenry (1316); the battle of Knockdoe (1504); the Battle of the Yellow Ford (1596); the First Battle of Curlew Pass (1599); the Battle of Dungans Hill (1647); the Battle of Castlebar (1798), and the Battle of the Bogside (1969).
- August 1, Swiss National Day, a public holiday in Switzerland.
- August 5, International Beer Day, a holiday in celebration of beer.
- August 6, 1825 Bolivia's independence day.
- August 6 National Salvadoran-American Day in the United States.
- August 6, 1945 Hiroshima is bombed and three days later so is Nagasaki in the only use of nuclear weapons against people.
- August 9, 1965 Singapore separated from the Federation of Malaysia and became independent.
- August 9 is National Women's Day in South Africa.
- August 10, 1822 Ecuador became an independent country.
- August 14, 1947 Pakistan became independent (included East Bengal region as a whole).
- August 15, Catholic, Feast of the Assumption
- August 15, 1769 Corsica, birth of Napoleon Bonaparte
- August 15, 1945 Emperor Hirohito declares Japan's unconditional surrender officially ending the Second World War.
- August 15, 1945 Korea became an independent country.
- August 15, 1947 India became an independent country.
- August 17, 1945 Indonesia became an independent country.
- August 19, 1945 Vietnam's August Revolution succeeded.
- August 20, 1083 Hungary's Saint Stephen canonized (1001 CE), thus becoming the first of the canonized confessor kings. St. Stephen's day is a national holiday in Hungary as well as an observed holiday for many Hungarian-Americans and other Hungarians around the world.
- August 20, 1991 Estonia regains its independence, formally leaving the Soviet Union which had annexed it back in World War II.
- August 21, 1959 Hawaii became the 50th state of the United States of America. The third Friday of August was designated Statehood Day, a state holiday.
- August 25, 1825 Uruguay became independent from Brazil.
- August 31, 1957 Malaysia became an independent country.
Monthlong events in August
- Edinburgh Festival is an internationally famous arts festival that takes place during August
- National Immunization Awareness Month
- National Psoriasis Awareness Month
- In many European countries, August is the holiday month for most workers
- The Philippines celebrates August as the Buwan ng Wika ("Language Month")
- In the United States, August is National Back to School month. Some US School districts and systems return to school in August.
- In the United States, August is National Goat Cheese Month.
- American Adventures Month
- Audio Appreciation Month
- Black Business Month
- Cataract Awareness Month
- Children's Eye Health and Safety Month
- Children’s Vision and Learning Month
- Get Ready for Kindergarten Month
- Happiness Happens Month
- Immunization Awareness Month
- Inventors' Month
- Neurosurgery Outreach Month
- Panini Month
- Spinal Muscular Atrophy Awareness Month
- What Will Be Your Legacy Month
- Win with Civility Month 
Weeklong events in August
- During the first week of August in Wales, the National Eisteddfod of Wales is held, in which many aspects of Welsh art and culture are celebrated.
- The Sturgis Motorcycle Rally is held the first full week in August each year.
- The middle week of August is the peak of the Perseid meteor shower.
- The Pennsic War, a massive gathering of the Society for Creative Anachronism, takes place about the first week of August every year.
Other August events
- The first full weekend in August each year, Twinsburg, Ohio celebrates Twins Days.
- Bon festival - (Obon Festival) is a Japanese traditional buddhist custom, evolved into a family reunion holiday. Many Japanese manufacturers and firms give their employees three to five days off around August 15.
Daily events in August
- The Philippines celebrates National Heroes Day in commemoration of the First Cry of the Philippine Revolution on August 23, 1896.
- "August." Encyclopedia Britannica. 2008. Encyclopædia Britannica Online. 23 Sep. 2008.
- Bober, Mike. Celebrate National Goat Cheese Month with Local Favorites.
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