Halocho #613 - Can we sit on chairs on 9 B'Av?

On the fast of 9 B'Av it is customary not to sit on chairs from the time the fast begins (Monday afternoon before sunset) until noon the following day (Tuesday).

Instead, one sits on the floor. Anything within 3 Tefachim (about 9" - 24 cm) of the floor is considered as being on the floor.

After noon one may sit on regular chairs. However, all other restrictions of the fast apply until the fast is over at night-fall.

Source: Kitzur Shulchan Aruch 124: 16

- Danny
Sunday, 7 Menachem Av 5770