Just as sunrise and sunset are especially auspicious moments for prayer and meditation, so there are special times of the year, special seasons when the aspirant has opportunities for easier communion and quicker advancement than he has at other times. These seasons were known to the ancient religions of America, of Europe, of Africa, and of Asia. Hence they are universal dates and universally kept in the annals of mysticism. It is because of this knowledge, although somewhat obscure, that the religious festivals and sacred seasons like Christmas and Easter have been made part of various religions, both pagan and modern. Jewish and Greek mystics, as well as those of Egypt and Rome, observed them. These mystically auspicious times were the new moon days following the opening of each of the seasonal equinoxes or solstices. That is, the first new moon after March 21st, June 21st, September 21st, and December 21st. At such times the disciple should make a special effort to purify himself, to fast, pray, worship, and meditate because it is easier then to achieve the result sought.
-- Notebooks Category 3: Relax and Retreat > Chapter 6 : Nature Appreciation > # 49