I’m not saying that it wasn’t around that time. Obviously it was at sunset. Are you backing off of using 17:15 as an exact time? It makes a big difference since a plane moving 500 mph is covering more than 8 miles per minute.
Not backing off anything. That’s why I provided a link to a source saying Leyvas said 5:15. But if you are willing to discuss distance travelled at high speed, explain the lack of relative motion of what you believe is a missile with its rocket motor(s) still ignited climbing into the sky. Keep in mind, it takes something like the space shuttle a little under 2 minutes to reach 150,000’ at which point it is moving at 3000 mph.