"Gambling day" time parameters at MSS

I'm trying to find out when the gambling day begins and ends at Main Street Station. I want to maximize my ADT for an upcoming trip for comp purposes and avoid play there on days when I won't be around much. I emailed MSS but received no response. Anybody have this info? Thaks in advance for replies.

I beleive a day starts at 3.00 A.M. and ends at 3:00 A.M. the next day. This what I was told, and I remember when I was playing a machine, my daily score changed to zero after three in the morning. This was at MSS.