Which Roman festival honored the goddess Fortuna on June 24?

The Roman festival honoring the goddess Fortuna on June 24 was called Fors Fortuna.

Fors Fortuna was celebrated annually on June 24, close to the summer solstice. The festival honored Fortuna, the Roman goddess associated with luck, fate, and chance, and was especially connected with people whose work depended on the Tiber River, including boatmen and millers.

Tradition credited Servius Tullius with establishing the festival and temples of Fortuna along the Tiber. Participants traveled by boat or on foot to the sanctuary, treating the day as a popular and lively public holiday.

Fors Fortuna is sometimes confused with Floralia, a spring festival honoring Flora, or with Vestalia, June rites connected with Vesta. Those festivals honored different goddesses and followed different ritual traditions.