The first Buy Nothing Day    1    (celebrate) in September 1992. In1997, it was changed to the Friday following Thanksgiving in November. Soon after, it gained    2    support of Adbusters, a Canadian media company questioning the    3    (important) that cultures give to advertising and shopping. When the group tried to place commercials(广告) on television, the only major TV network     4    accepted them was CNN. Despite these attempts to silence the movement, it spread to the US, Germany, Japan, and several other countries worldwide.

Buy Nothing Day challenges people to avoid    5    (buy) anything for 24 hours. Supporters hope that during this time, people will reflect on the need to “have things”, which is pushed by large companies. By getting people to focus on what they do have, they can become more sympathetic(有同情心的) towards the poor     6    people who have less than they do.

Another activity    7    (call) the zombie walk is to show the way most people shop. In this walk, participants walk around shopping malls like zombies. If anyone asks them what’s happening, they    8    (educate) them about Buy Nothing Day. Whirl-Mart is another funny method of drawing attention to the purpose of Buy Nothing Day. People will take empty shopping carts and form a line inside a supermarket. Then, they will race through the aisles (通道) without putting anything in their empty carts. Other    9    (supporter) celebrate the event by     10    (simple) doing other free activities such as hiking, bicycling, or taking a boat ride. No matter how one participates, Buy Nothing Day presents us with an opportunity to remember that the best things in life are free.

e-Day celebrates the mathematical constant e, which has a value of 2.7182818. It     1     (celebrate) on February 7 in countries that follow the month/day (m/d) date format. Also known as Euler’s number, after the Swiss mathematician Leonhard Euler, e is one of     2     (important) numbers in mathematics, including 0, 1 and pi   (π). e is also sometimes called the Napier’s Constant and is often     3     (incorrect) referred to as Euler’s Constant.

Many European countries celebrate Euro Day, sometimes also     4     (call) e Day. The day is observed on January 1 and celebrates the anniversary of the     5     (adopt) of the Euro, Europe’s common currency in 2002. In New Zealand, eDay is a day     6     people can get rid of e-waste or old electronics such as     7     (computer) and old appliances so they can be recycled rather than being placed in a landfill. Engineer’s Day is observed in Paducah, Kentucky on February 21, where many people participate in     8    egg drop contest, create edible (可食用的) cars, and tape people to walls.

The year is full    9     mathematical and scientific holidays. Some of these include: Yellow Pig Day, Mole Day, Fibonacci Day, Palindrome Day, and Pi-Day. Use our Date Pattern Calculator    10     (find) out other interesting calendar dates during the year.