Today is a combination of both the New Moon and the Solar Eclipse. And it happens on a Saturday. New Moons are already associated with the dead in the Hindu faith. Solar Eclipses are symbolic of the dying and eventual rebirth of the Sun. And Saturday is the day to honor the dead.
So we have three times the Reaping power here. It’s perfect for any form of Necromancy, charging of wards and charms, and anything else that uses aggressive or darker forms of magic. For more info this handy little post carries some information.