Seventeenth of Tammuz

Seventeenth of Tammuz
Official nameHebrew: שבעה עשר בתמוז
TypeJewish religious and national
SignificanceDate when the walls of Jerusalem were breached
ObservancesFasting, prayer
Date17th day of Tammuz
2024 date23 July
2025 date13 July
2026 date2 July
2027 date22 July
Related toThe fasts of the Tenth of Tevet and Tisha B'Av, the Three Weeks & the Nine Days

The Seventeenth of Tammuz (Biblical Hebrew: שִׁבְעָה עָשָׂר בְּתַמּוּז, Modern: Shiv'á Asár beTammúz, Tiberian (SBL): Šib̲ʿāʿāśār bəṯammuz)) is a Jewish fast day commemorating the breach of the walls of Jerusalem before the destruction of the Second Temple. It falls on the 17th day of the fourth Hebrew month of Tammuz and marks the beginning of The Three Weeks, a mourning period leading up to Tisha B'Av.

The day also traditionally commemorates the destruction of the two tablets of the Ten Commandments and other historical calamities that befell the Jewish people on the same date.