Bolas de Fuego in El Salvador is a festival where people take balls of cloth, soak them in petrol and throw them around the streets to commemorate a volcanic eruption from over 300 years ago.

September 24 is the National Punctuation Day in USA.

National Weatherperson’s Day in February 5, which was the birthday of one of the first ever weather reporters, John Jeffries, honors the work of those reporting the weather.

Star Wars Day dates May The Fourth, and it's a pun for the phrase "May the Force be with you!"

Picnic Day is a tradition in Northern Australia that starts on the first Monday of August every year. It's celebrated as a three-day weekend, with thousands of people heading to Adelaide River to have a huge mass picnic.

Obama Day is celebrated by Kenyans on November 6.

International Friendship Day is a day for celebrating friendship celebrated on the first Sunday of August.

Midsummer, the longest day of the year has special significance in Scandinavian countries such as Sweden and Norway where it is known as Midsommar. On June 21 they dress up in traditional costumes, drinking large amounts of alcohol and specially prepared food.

Bermuda Day is an important aspect of life in the tropical island as it signals the moment when summer officially begins, on May 24.

Steak and BJ Day on March 14 is the male equivalent of Valentine's Day, and celebrates two things that men love – sex and meat.