The pagan calendar refers to a system of timekeeping used by various pagan traditions, often based on the cycles of nature and agricultural seasons. It typically includes eight major festivals, known as the Wheel of the Year, which celebrate seasonal changes and agricultural activities. These festivals often align with solstices, equinoxes, and other significant natural events. Key celebrations in the pagan calendar include Samhain, Yule, Imbolc, Ostara, Beltane, Litha, Lammas, and Mabon. Each festival has its own unique customs and rituals, reflecting the beliefs and practices of different pagan groups, such as Wicca and Druidry.