In Spain the Assumption of Mary celebrates the presumed day when Mary rose to heaven. It is annually celebrated on August 15th.
This holiday is one that not all people get off and mainly Catholics celebrate it. Most have a feast on Virgin Mary's honor and go to a church service.
The Assumption of Mary has been celebrated since the fourth century CE as it was an important date in Christian history. However it wasn't until Pope Pius XII ruled that it would be an official holiday in 1950.