The Ides of March, or Idus Martias, is today. Many significant events in history occurred on March 15th. Idus Martias is a tradition celebrated every March 15th. The Ides of March began during Roman times that marks the annual festival dedicated to the god Mars.
The Ides of March is perhaps best known as the day Julius Caesar was assassinated by a group of "liberators" in 44 B.C. William Shakespeare first coined the phrase "Beware the Ides of March" in his play "Julius Caesar" when a soothsayer warned Caesar of his pending murder. In 1917, on the Ides of March, Nicholas II of Russia left the throne as the last Czar of Russia, Grand Duke of Finland, and titular King of Poland. The Russian Orthodox Church recognizes Nicholas II as Saint Nicholas the Passion-Bearer.
The Ides of March is presently the date that Hungary celebrates the 1848 Revolution, Japan celebrates the Harvest Festival, and the NCAA kicks off the "March Madness" tournament.