In the Aeon of Horus,
Thelemites often use a unique system of dating that incorporates elements of Tarot, astrology, and Thelemic principles. This system aligns significant events and periods with corresponding Tarot trumps and the positions of the Sun and Moon in the zodiac.
Thelemic year cycles and representation The Thelemic calendar begins in 1904, the year in which Crowley received
The Book of the Law and inaugurated the Aeon of Horus. Each year in the Thelemic calendar is represented by a Tarot trump. This association is based on a cycle that repeats every 22 years, corresponding to the 22 Major Arcana cards of the Tarot. The years are divided into "docosades" of 22 years each, denoted by Roman numerals. For example, the year 1947 (the year of Crowley's death) corresponds to "
The Universe" (XXI), as 1947 - 1904 gives 43, and dividing 43 by 22 leaves a remainder of 21, corresponding to the 21st card, "The Universe" (XXI). Thus, the year 1947 would be written as Anno Ixxi, where I indicates the second docosade (
The Magician) and xxi is the year within that docosade.
Sun and moon sign Thelemic timekeeping also considers the astrological positions of the Sun and Moon. For instance, on December 1, 1947, at the time of Crowley's death, the Sun was in Sagittarius (♐) at 8°, and the Moon was in Cancer (♋) at 20°.
Recording time in a magical record The Magician might date their
magical record entries at specific times of day, in line with the practices outlined in
Liber Resh vel Helios. This practice involves saluting the Sun at dawn, noon, sunset, and midnight, thereby making entries that are aligned with these solar positions.
Example of Thelemic date The date of Aleister Crowley's death, December 1, 1947, in Thelemic terms could be expressed as:
Dies Lunae, Anno Ixxi, ☉ in 8° ♐, ☽ in 20° ♋ This interpretation of Anno Ixxi, "The Completion of the Magician", aligns with the symbolism of the Tarot and the progress through the docosades. ==See also==