TAMMUS, Thamus, or Thammus, a Month of the Jews, which answers to the Moon of June, and which was the fourth of the Holy Year, and the tenth of the Civil Year. It has but twenty-nine Days. On the seventeenth Day of this Exod. xxxii.Month the Jews kept a Fast, in commemoration of the Worship of the Golden Calf, and the Punishment that follow’d thereon. In this same Month they keep a Memorial of what happened to Miriam the Sister of Moses, who was struck with a Leprosy for murmuring against Moses.
Numb. xii. 1—10.The Syrians make use of this Word to express in their Calandar the Month that answers to July. The Arabians, the Persians, and the Turks, also use it, to express the hottest part of the Summer. The Jewish Astronomers still at this day call the Sun’s Entrance into the Sign Cancer by the Name of Tekupha Tammus, or the Revolution of Thamus.