One Boston Day in United States
One Boston Day in United States is held on April 15. This event in the second decade of the month April is annual. 
Help us
Help us 
April 15th, 2015 marked the beginning of a new annual Boston tradition: One Boston Day. Each year, the day serves as an opportunity to celebrate the resiliency, generosity, and strength demonstrated by the people of Boston and those around the world in response to the tragedy of April 15th, 2013. Immediately after the Marathon bombing on April 15th, 2013, Bostonians responded to violence and hate with selflessness and love.
#onebostonday
Similar holidays and events, festivals and interesting facts
National Pecan Day in USA on April 14
National Dog Bite Prevention Week in US on April 14 (the second full week of April );
International Moment of Laughter Day on April 14 (is focuses on laughter as a way to de-stress);
Pan American Day on April 14 (El Salvador, Haiti, Honduras and Venezuela, USA);
Pan American Day on April 14 (several countries in The Americas);
Tax Day on April 15 (United States, the Philippines - the official deadline for filing an individual tax return or requesting an extension);
Jackie Robinson Day on April 15 (United States);
National Glazed Ham Day in USA on April 15
World Art Day on April 15
National American Sign Language Day in United States on April 15 (National ASL Day);
General Electric Day on April 15
Foursquare Day on April 16
National Healthcare Decisions Day on April 16 (United States);
National Eggs Benedict Day, National Baked Ham with Pineapple Day and Day of the Mushroom in USA on April 16
Stress Awareness Day on April 16
Liberation Day in Washington, DC, USA on April 16 (in honor of a decree signed by President Abraham Lincoln in 1862 to free slaves from the District of Columbia);
National Tickle Day in USA on April 16
International Banana Day on April 16