The first day of T. (whose name does not occur in the Bible) marks the beginning of the year, in accordance with Lev. 23 and Num. 29:1; yet according to Lev. 25:9 the first day of the year is the 10th of T. This oscillation is held by some to be due to the foreign origin of the custom of beginning the year in autumn. During the month of T. the following solemnities occur: New Year (*rôš haš-šānāh*), Day of Atonement, and the Feast of Tabernacles (v.) or Booths (*sukkôth*).
T. is one of the month-names of Babylonian origin, introduced into Palestine at a rather late period, since they are found only in post-exilic biblical texts (*têbêth* in Esth. 2:16; *nîsān* in Esth. 3:7; Neh. 2:1; *dâhār* in Esth. 3:13; 8:12; *kislev* in Neh. 1:1).