Lag B’Omer is a minor holiday between Passover and Shavuot (the period of Omer) that occurs approximately one month after Passover.
The holiday is marked by a festive atmosphere associated with bonfires and weddings, symbolizing light and happiness.
The period of the Counting of the Omer is one of semi-mourning, during which there are restrictions on celebrations such as weddings and other activities such as listening to music and cutting hair. These restrictions are lifted on the 33rd day of the Omer (Lag B’Omer) for Ashkenazi Jews, and the 34th day of the Omer (Lad B’Omer) for Sephardic Jews.