National Lineman Appreciation Day

First Constitution Day and Lawyer's Day in Bulgaria on April 16;

Stress Awareness Day on April 16;

World Amateur Radio Day on April 18 (Every April 18, radio amateurs worldwide take to the airwaves in celebration of World Amateur Radio Day. It was on that day in 1925 that the International Amateur Radio Union was formed in Paris);

Auctioneers Day on April 18 (is one of the world’s most ancient professions, having begun more than 2,000 years ago. Third Saturday of April);

Newspaper Columnist Day on April 18;

High Five Day on April 18;

Broadcaster's Day in the Dominican Republic on April 18;

International Jugglers' Day on April 18;