I just listened to my tape of the 19 Aug 99 UT TDF flashes. I have a few corrections. My first obs (in binoculars) was at 4:50:22 UT. Several double flashes of the first surface in the 4:59:40 to 5:03:07 UT timeframe. Nearly equal flashes from both surfaces from 5:05:03 to 5:09:13 UT. I place the mid point at 5:07:00 UT on 19 Aug 99 (from Falcon, CO USA) Ended obs as the second surface bright flashes were getting dim at 05:13:37 UT. Ron Lee