What is Tisha B'av
The saddest day on the Jewish calendar is the Ninth of Av, "Tisha b'Av," the date on which both our Holy Temples were destroyed, and exile, persecution and spiritual darkness began.
Tisha b'Av starts at sundown of the eighth of Av and lasts till the following nightfall. During this time-period we fast, eschew pleasurable activities and amenities, and lament the destruction of the Holy Temple and our nation’s exile.
Basic Laws of Tisha B'av
Besides fasting, we abstain from additional pleasures: washing, applying lotions or creams, wearing leather footwear, and marital relations. Until midday, we sit on the floor or on low stools. We also abstain from studying Torah—besides those parts that discuss the destruction of the Temple.
On the eve of Tisha b’Av, we gather in the synagogue to read the Book of Lamentations. Tallit and tefillin are not worn during the morning prayers. After the morning prayers we recite Kinot (elegies). We don the tallit and tefillin for the afternoon prayers.
For more about Tisha B'av, click here.