Lag Baʿomer (ל = 30 + ג = 3) – 33rd day of the omer)
The ‘omer (עֹמר) is an ancient unit of measurement used in Temple times, weighing between 1,560 and 1,770 kg. From the second day of Passover and until Shavuot, i.e. for 49 days, an ‘omer of barley was brought as an offering to the Temple in Jerusalem. The Hiloula of Rabbi Shimon bar Yohaï (1st and 2nd century), which takes place on the 33rd day of the ‘omer, is one of the most popular celebrations in Israel and the Diaspora. Meron, in the Upper Galilee in northern Israel, is particularly known for hosting the tombs of Rabbi Shimon bar Yohai and his son, Rabbi Eleazar bar Rabbi Shimon. It is the second busiest place in Israel. There are also the remains of an old 3rd century synagogue which suffered several earthquakes, as well as the tombs of Hillel Hazaken and Shammai (1st century BCE).