Hi dstancer, welcome to blonde.
My initial reaction was it was a 2 day event, but having just perused the DTD Schedule, it DOES look like 2 separate x 1 Day affairs.
It has a 15 minute clock, & starts @ 3pm on Sunday, so I doubt that could last 2 days the way folks play these days. I know a bloke who managed to lose a 50,0000 starting stack in just over a level @ DTD recently, in a well-structured thing, so I'm not sure a 15 minute clock jobbie can last 2 days.
I'm sure someone who knows for sure will be along shortly & confirm it for you.
http://www.dusktilldawncasinonottingham.com/whatsgoingon.php#next-week