World Tai Chi and Qigong Day
World Tai Chi and Qigong Day is held on April 8. This event in the first decade of the month april is annual.
International Beaver Day on April 7 (The largest beaver-built dam is in Wood Buffalo National Park, Alberta, Canada and is 850m long);
National Dental Hygienists Week in Canada on April 7 (April 7 to 13);
Siblings Day on April 10 (International observance);
International Louie Louie Day is an annual holiday dedicated to Richard Berry's famous song Louie Louie on April 11;
Global Day of Action on Military Spending on April 12 (The day was originally proposed by the International Peace Bureau and the Institute for Policy Studies with the aim of promoting a common awareness of the amounts of money spent on military)