The Omer is the days between Passover and Shavout.. The Omer is a time of semi-mourning, when celebrations are forbidden. The 33rd day of the Omer is Lag B’omer, which became a happy day allowing the community to come together by briefly interrupting the sadness. Our Lag B’omer Bonfire features a Sing-a-long with Kenny Green around our virtual bonfire.