Tzom Gedaliah

[ tsawm guh-dahl-yuh ]
/ ˈtsɔm gəˈdɑl yə /

noun

a Jewish fast day observed on the third day of the month of Tishri in memory of the treacherous murder of Gedaliah, Jewish governor of Judah appointed by King Nebuchadnezzar of Babylonia.
Also called Fast of Gedaliah.