Sukkot or Sukkos beings at 6:43 P.M. in Vilnius on Friday, September 29, 2023.
The festival of Sukkot–literally meaning booths, tents, tabernacles–is celebrated for seven days in Israel and eight days in the Diaspora, starting on the fifteenth day of the Hebrew month of Tishrei. It is one of the three festivals during which Jewish men were required to make pilgrimage to Jerusalem in the times of the Holy Temple.
This year the first day of the week-long holiday coincides with the Sabbath, adding another layer to the observance of taking the lulav, or the four species, and dwelling in the sukka or booth is postponed till after the conclusion of the Sabbath. For more information, see here.