That Sucks Day
That Sucks Day is held on April 14. Throughout the history of the holiday and the organization that sponsored it, That Sucks LLC, they seek to exemplify all that is terrible and wrong in the world. This event in the second decade of the month April is annual. 
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Most people feel that this day sucks because the next day of April 15 is National Tax Day, and people usually end up working until the last minute to file their income taxes. In the United States, Tax Day is the day on which individual income tax returns are due to be submitted to the federal government. Since 1955, Tax Day has typically fallen on or just after April 15.
You’ll never get used to it. It’s awful every day, but each day carries its own particular awfulness.
President Abraham Lincoln’s Death: Lincoln was the 16th president. He played a critical role in the emancipation of slaves during the Civil War and is regarded as one of America’s greatest heroes for his dedication and perseverance on behalf of the Union. His untimely death occurred due to a fatal shot by John Wilkes Booth at a theater production. He passed away on April 15, 1865. Did you know that on this day in 1870, Canada stopped accepting US silver coins as legal tender? Titanic remains at the bottom of the North Atlantic Ocean, split in half after it sank on April 15, 1912.
Similar holidays and events, festivals and interesting facts
Scrabble Day on April 13 (April 13th is the birthday of Alfred Butts, the inventor of the Scrabble game);
International Kiss Day on April 13
International Moment of Laughter Day on April 14 (is focuses on laughter as a way to de-stress);
Look Up at the Sky Day on April 14
Reach as High as You Can Day on April 14
N'Ko Alphabet Day on April 14 (Mande speakers);
Wine Journalist's Day in Argentina on April 14
Rubber Eraser Day on April 15 (Joseph Priestley discovered the eraser in 1770, using pieces of rubber imported from Brazil. Then in 1858, Hyman Lipman of Philadelphia, Pa., patented the pencil with an eraser at the end);
Take A Wild Guess Day on April 15
Stoker's Day on April 15 (is celebrated in spring, at the end of the heating season. All shifts workers gether in the boiler room to extinguish the boilers and begin to celebrate. The date of this celebration is not fixed. The local authorities decide when to start and when to finish the heating season but usually it hapends not later than April 30 if the average air temperature is above +8 for 3 days in a raw)