Abbreviation of the School Day of Non-violence and Peace (from catalan-valencian-balear: Dia Escolar de la No-violència i la Pau), founded in Spain in 1964 and observed on January 30 or thereabouts every year, on the anniversary of the death of Mahatma Gandhi. In countries with a Southern Hemisphere school calendar, it can be observed on March 30 or thereabouts.