Hispanic Day celebrates when Christopher Columbus first set foot in the Americas in 1492. it always occurs October 12th.
To celebrate the Spanish king and prime minister observe the nation's flag being raised in Madrid, the capital. Then they go on to lead the military procession throughout the town. It is also a chance to get a day off for most citizens.
According to the Julian calendar, Christopher Columbus landed in the 'new world' on October 12th, 1492. Ever since this important has been recorded it has been deemed a national holiday to celebrate such an extraordinary find.