Misa del Gallo is a name for the Roman Catholic Mass celebrated around midnight of Christmas Eve and here and there in the days instantly going before Christmas. The convention of midnight mass on Christmas Eve was first chronicled by Egeria, the Galician lady who went on a journey to the Holy Land around 381– 384. She saw how the early Catholics of Jerusalem regarded the Christmas puzzle with a midnight vigil at Bethlehem.
This was trailed by a torchlight parade to Jerusalem, touching base at the Church of the Resurrection at day break. After 50 years, Pope Sixtus III, roused by the midnight vigil, founded the act of a midnight mass after the cockcrow in the cave like rhetoric of the renowned worldwide Basilica of Santa Maria Maggiore. There are discrepancies, however, with the correct time of the cockcrow because of the way that the old Romans set it toward the beginning of the day. In 1587, the head priest from the Convent of San Agustin Acolman, San Diego de Soria, requested of the Pope to permit holding the mass outside in light of the fact that the congregation couldn't suit the huge number of participants at the evening celebration.