Tisha B'AvTisha B'Av (תִּשְׁעָה בְּאָב Tīšʿā Bəʾāv; tiʃʕa beˈʔav, the ninth of Av) is an annual fast day in Judaism, on which a number of disasters in Jewish history occurred, primarily the destruction of both Solomon's Temple by the Neo-Babylonian Empire and the Second Temple by the Roman Empire in Jerusalem. Tisha B'Av marks the end of the three weeks between dire straits and is regarded as the saddest day in the Jewish calendar, and it is thus believed to be a day which is destined for tragedy.
Solomon's TempleSolomon's Temple, also known as the First Temple (, Bēṯ hamMīqdāš hāRīʾšōn, ), was a Temple in Jerusalem believed to have existed between the 10th and 6th centuries BCE. Its description is largely based on narratives in the Hebrew Bible, in which it was commissioned by biblical King Solomon before being destroyed during the Siege of Jerusalem by King Nebuchadnezzar II of the Neo-Babylonian Empire in 587 BCE.
AvAv (also Menachem Av, ) is the eleventh month of the civil year and the fifth month of the ecclesiastical year on the Hebrew calendar. It is a month of 30 days, and usually occurs in July–August on the Gregorian calendar. The Babylonian Talmud states that "when we enter [the month of] Av, our joy is diminished". This is because the darkest events in Jewish history occurred during the first week and a half of this month, particularly the Nine Days which culminate in Tisha B'Av, the 9th day of Av.
FastingFasting is the abstention from eating and sometimes drinking. From a purely physiological context, "fasting" may refer to the metabolic status of a person who has not eaten overnight (see "Breakfast"), or to the metabolic state achieved after complete digestion and absorption of a meal. Metabolic changes in the fasting state begin after absorption of a meal (typically 3–5 hours after eating). A diagnostic fast refers to prolonged fasting from 1 to 100 hours (depending on age) conducted under observation to facilitate the investigation of a health complication, usually hypoglycemia.