To accurately determine the time in which each of the Seven Planets are in their respective line of duty, per hour, one must either have access to a printed lunar calendar showing the Jewish months, and know the precise starting point for each day and night, or else be familiar with the ever-changing aspects of the Jewish months, as the planetary influences will change with the conjunction of the moon with the sun, also known as the New Moon (occurring every 29 days, 12 hours and 793 parts of an hour), as also with the intercalation of the lunar month during a Jewish Leap Year (occurring seven times in a 19-year period), when the lunar month Nisan and its influences will be delayed by one month on account of an additional lunar month Adar.Pirke Rabbi Eliezer (1983), p. 22 (chapter 7) Several online websites provide conversion tables for converting a known date in the Gregorian calendar with the corresponding weekday, day and month in the Hebrew calendar.
