Happy Cerealia - This Roman Festival ran from 12th-19th April, for the Goddess of the Grain, Ceres. Women in white ran around with torches, representing Ceres searching for her daughter Proserpina.
Ovid mentions that Ceres' search for her lost daughter Proserpina was symbolized by women in white, running about with lighted torches.
The painting is Spring by Alma-Tadema. 1894
In this scene, a Dionysiac scene plays out with dancing, nudity, and veneration of the grape. The scene is thought to date from the 220s CE.
How the Romans celebrated Spring: https://alison-morton.com/2014/04/17/how-the-romans-celebrated-spring-2/