What religious festivals did the people of the Iron Age celebrate?

During the Iron Age, various cultures celebrated religious festivals that often revolved around agricultural cycles, seasonal changes, and fertility rites. For example, ancient Celts held festivals like Samhain and Beltane, marking the transition between seasons and honoring deities. Similarly, the Germanic tribes celebrated Yule during the winter solstice, while Mediterranean cultures, such as the Greeks and Romans, observed festivals like the Eleusinian Mysteries and Saturnalia, which were dedicated to their gods and involved communal feasting and rituals. These festivals played a crucial role in reinforcing social cohesion and cultural identity.