The quotation from Tertullian above refers to the all-night vigil service held at Easter. A similar service came to be held in the night that led to any Sunday. By the fourth century this Sunday vigil had become a daily observance, but no longer lasted throughout the night. What had been an all-night vigil became a service only from cockcrow to before dawn. Saint Benedict wrote about it as beginning at about 2 in the morning ("the eighth hour of the night") and ending in winter well before dawn (leaving an interval in which the monks were to devote themselves to study or meditation), but having to be curtailed in summer in order to celebrate lauds at daybreak.