What Day Is Tisha B'Av 2024 Calendar. Religious jews read from the biblical book of lamentation as they observe tisha b’av in jerusalem’s old city, israel. תשעה באב or ט׳ באב , “the ninth of av,”) is an annual fast day in judaism, named for the ninth day (tisha) of the month of av in the hebrew calendar.

Here is a detailed account of the main events that occurred on tisha b’av. This places the fast day somewhere between the latter half of july and the beginning of august on the gregorian calendar.