Reckoning of Feast days
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The Book of the Courses of the Heavenly Luminaries
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Construction of the Watch
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To make a circle, anchor a stake in the ground. Loop one end of a cord to center stake and fasten the other to another stake, to be used as scribe. The length of cord will determine the radius of the circle. While keeping cord taught scribe the circle. Place a permanent post at center of circle.
Begin on the Vernal equinox. From center post take a sighting on the position of the sunrise, and place a sighting post to mark the sunrise. In the evening set another where the sun sets.
Reckon 30 sunrises and then fix another sighting post where the sun rises and a second one where it sets. Divide the distance between sighting posts (portal) into 12 equal windows, using smaller posts.
Reckon another 30 sunrises and set another sighting post for sunrise and sunset. Divide the distance between this portal into eight equal windows.
Reckon another 30 sunrises and set another sighting post for sunrise and sunset. Divide the distance between this portal into four equal windows.
Now wait until the autumnal equinox, the sun will rise and set over the first sighting posts. Reckon 30 sunrises from said equinox and set another sighting post for sunrise and sunset. Divide the distance between this portal into 12 equal windows.
Reckon another 30 sunrises and set another sighting post for sunrise and sunset. Divide the distance between this portal into eight equal windows.
Reckon another 30 sunrises and set another sighting post for sunrise and sunset. Divide the distance between this portal into four equal windows.
Completed this serves as an accurate reckoning of YHWH’s feast days.