In Spain, there are many days to celebrate, and reasons for doing so. Some of the most important ones are:
Constitution Day: December 6. Commemorates the 1978 referendum, when the Spanish people approved the current Spanish Constitution.
Holy Thursday, Good Friday and Easter: variable date. These are holidays during Holy Week, a Christian commemoration that recalls the passion, death and resurrection of Jesus.
Night of St. John's: June 24. A holiday associated with pagan rituals that, through bonfires, sought to increase the strength of the Sun in the coming winter.