23 Iyar

1313 BCE- Moshe Rabbeinu hit the rock and water came out.

142 BCE- Shimon Hachashmonai drives the Karaites out of the Citadel, their last stronghold in Yerushalayim / Jerusalem. The day was observed as a Yom Tov in Megillat Taanit

1096- The Worms community used to hold a Taanit in memory of the victims of the crusade