TWH – This week marks the celebration of the vernal (spring) equinox and the astronomical beginning of spring in the northern hemisphere. The actual equinox occurs Tuesday, Mar. 20 at 12:15 am EDT (10:29 UTC). At the same time in the southern hemisphere, it will be the autumnal equinox, and the beginning of the fall season. Many Pagans, Heathens, and polytheists celebrate the spring equinox as Ostara, Lady Day, Shubun-sai, or simply the coming of spring.