Lag Ba'omer

Lag BaOmer
A Lag BaOmer bonfire, symbol of the holiday
Official name	Hebrew: ל״ג בעומר‎‎
Observed by	Jews
Type	Jewish
Significance	33rd day of the Counting of the Omer, which begins the 2nd day of Pesach
Begins	18th day of Iyar
2016 date	May 26
Related to	Pesach, Shavuot, Counting of the Omer

Lag BaOmer (Hebrew: ל״ג בעומר‎), also Lag B'Omer, is a Jewish holiday celebrated on the 33rd day of the Counting of the Omer, which occurs on the 18th day of the Hebrew month of Iyar.

This day marks the hillula (celebration, interpreted by some as anniversary of death) of Rabbi Shimon bar Yochai, a Mishnaic sage and leading disciple of Rabbi Akiva in the 2nd century, and the day on which he revealed the deepest secrets of kabbalah in the form of the Zohar (Book of Splendor), a landmark text of Jewish mysticism. This association has spawned several well-known customs and practices on Lag BaOmer, including the lighting of bonfires, pilgrimages to the tomb of Bar Yochai in the northern Israeli town of Meron, and various customs at the tomb itself.

Lag BaOmer is Hebrew for "33rd [day] in the Omer". (According to gematria, the Hebrew letter ל (lamed) or "L" has the numerical value of 30 and ג (gimmel) or "G" has the numerical value of 3. A vowel sound is conventionally added for pronunciation purposes.)

Some Jews call this holiday Lag LaOmer, which means "33rd [day] of the Omer", as opposed to Lag BaOmer, "33rd [day] in the Omer". Lag BaOmer is the traditional method of counting by some Ashkenazi and Hasidic Jews; Lag LaOmer is the count used by Sephardi Jews. Lag LaOmer is also the name used by Yosef Karo, who was a Sepharadi, in his Shulchan Aruch (Orach Chaim 493:2, and cf. 489:1 where BaOmer is inserted by a glossator). (The form Lag B'Omer ["33rd day of an Omer"] is also sometimes used, though it is not grammatically correct in this setting.) The Lubavitcher Rebbe, Rabbi Menachem Mendel Schneerson, writes in his Likkutei Sichos that a deeper reason for the term Lag BaOmer is that the Hebrew words Lag BaOmer (ל״ג בעמר, spelled without the "vav"), have the same gematria as Moshe (משה, Moses). He writes that Rabbi Shimon bar Yochai, whose yahrzeit is traditionally observed on this day, was mystically a spark of the soul of Moses.