Fast of Gedalia

Fast of Gedaliah
Official name	Hebrew: צוֹם גְּדַלְיָּה‎‎
Also called	Fast of the seventh month
Observed by	Jews
Type	Jewish
Significance	Mourning the assassination of Gedaliah
Observances	Fasting
Begins	3rd day of Tishrei at dawn (if Shabbat, then 4th day of Tishrei at dawn)
Ends	The same day, at sunset
2016 date	October 5
Related to	Ten Days of Repentance

The Fast of Gedaliah (/ɡɛdəˈlaɪ.ə/ or /ɡəˈdɑːljə/; Hebrew: צוֹם גְּדַלְיָּה‎‎ Tzom Gedalya), also spelled Gedalia, is a minor Jewish fast day from dawn until dusk to lament the assassination of the righteous governor of Judah. His murder ended Jewish autonomy following the destruction of the First Temple.

When the Babylonian king Nebuchadnezzar conquered Jerusalem, he killed or exiled most of its inhabitants and appointed Gedaliah, son of Achikam, as governor of the now-Babylonian province of Judah. Many Jews who had fled to Moab, Ammon, Edom, and other neighboring lands returned to Judah, tended the vineyards again, and enjoyed a new respite after their earlier suffering.

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Wikipedia