Dayenu was conceived in 1999 as a co-operation between the local lesbian and gay Jewish groups to enter a combined float in the 2000 Sydney Gay & Lesbian Mardi Gras. Shortly after the parade, the group formalised and agreed to operate in order to:
Based in Sydney, Australia, Dayenu exists to meet the needs of Jewish gays, lesbians, bi-sexuals, trans and intersex people as well as their friends, families, partners and other supporters. They provide outreach through education, information, resources, social activities and other events.