ט"ו בתמוז תשס"ז
There are 8 festival sabbats (distinct from full and new moon esbats) in the witch's wheel of the year - 4 moon sabbats and 4 sun sabbats.
The moon sabbats are called fire festivals, and can occur anywhere between 29-59 days following the preceding solstice or equinox. The 4 moon sabbats are Samhain (Feast of the Dead, Feast of Apples), Imbolg (Feast of Torches, Feast of Waxing Light), Beltane (Bonfire of Light, Celtic Lag B'Omer, Cetsamhain-opposite Samhain), and Lughnasadh (Feast of Bread, Lammas).
The sun sabbats refer to the quarter days (solstices and equinoxes), and are based on the astronomical position of the sun. The 4 sun sabbats are Mabon (autumn equinox), Yule (winter solstice), Ostara (spring equinox), and Litha (summer solstice).