So, Mr. Morden:
When does this roll-call thing happen today ?
You said the session "begins" at 5:30pm (I guess this is 23:30 here).
So, the roll call will likely be after midnight ?
I don't know exactly how it will work. C-Span's schedule:
http://www.c-span.org/convention/?party=rnc&day=1468911600has a list of speakers beginning at 5:30pm. While the official website:
http://convention.gop/post/147558746375/2016-gop-convention-program-announcedsays for Tuesday "The speakers below are part of the prime-time program, which will follow Tuesday’s Nomination Process."
So maybe the convention actually starts in the early afternoon again on Tuesday, and then the speakers begin at 5:30? That's my best guess. Or maybe the roll call itself is at 5:30? Either way, it sounds like the official nomination is supposed to happen before the speakers go in the evening.