It's a North American time zone. EST- Eastern Standard Time MST- Mountain Standard Time CST-Central Standard Time PST- Pacific Standard Time http://www.timetemperature.com/tzus/time_zone.shtml
Is there anyway the time for the build-off can start later? I live in the Pacific timezone, so if it's at 10 AM Est time then that's 7 AM in the morning for me. I am most of the time a good builder and I would like to participate, but 7:00 is too early for me. Now that its summer break I like to sleep in from anywhere between 8-10 AM which would be 11AM-1PM :/
A random small competition was hosted on short notice. Here are some of the screenshots of the builders' work.