CSBF provided the following time line for the launch attempt.
1) Roll out
2am - 2:30am Nov 28 (local time) / 8am - 8:30am Nov 27 (Eastern)
2) Balloon layout
5am-5:30am (local) / 11 am - 11:30am (Eastern)
3) Launch
8am Nov 28 (local) / 2pm Nov 27 (Eastern)
-KC