When Does Hanukkah Start 2025 Calendar. Hanukkah 2025 starts on sundown of december 14 ending at sundown on monday, december 22, celebrating for jews and eight day festival commemorating the rededication of the holy temple in jerusalem. Hanukkah starts on the hebrew calendar date of 25 kislev.
Happy hanukkah!when does jewish holiday start in. This is because the date fluctuates with the gregorian calendar , which uses a solar dating system.