Bal en Blanc is a huge rave party that is hosted annually, in April during Easter holiday weekend, in Montreal, Canada. It features headliner DJs from all over the world and attracts over 15,000 attendees. This event usually has two separate rooms, one catering to house music and the other to trance music. The party attracts large numbers of both gay and straight ravers. It usually lasts for more than 14 hours.