Definition that contains fast day
- fast of the firstborn (Judaism) a minor fast day on Nissan 14 that is observed only by firstborn males; it is observed on the day before Passover
- day of atonement (Judaism) a solemn and major fast day on the Jewish calendar; 10th of Tishri; its observance is one of the requirements of the Mosaic law
- tishah b'ab (Judaism) a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
- ninth of av (Judaism) a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
- fast of gedaliah (Judaism) a minor fast day on Tishri 3 that commemorates the killing of the Jewish governor of Judah
- major fast day one of two major fast days on the Jewish calendar
- fast of ab (Judaism) a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
- tisha b'ab (Judaism) a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
- tishah b'av (Judaism) a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
- fast of tammuz (Judaism) a minor fast day on Tammuz 17 when the walls of Jerusalem were breached