This graphic shows position of the 00:00 UTC terminator both at SEA LEVEL and at FL350. The arc crossing points are at that time.
![[Image: attachment.php?aid=379]](http://www.auntypru.com/forum/attachment.php?aid=379)
Both terminators move westwards 15 degrees longitude per hour, or a quarter of a degree of longitude per minute. For fuel exhaustion at 00:16 - 00:17, simply move both terminators west by 4 degrees of longitude.
If an intentional ditch was the objective, twilight to dawn would be optimal from a pilot's perspective. Since we know that the aircraft was still in the air at 00:19 UTC it is reasonable to assume that the planned water entry would have to be somewhere between just east of the 00:20 utc terminator position, (which would be 5 degrees of longitude west of the 00:00 utc terminator in the plot) and the 00:00 utc shown.
If the intention was simply to let it run out of fuel and crash, west of the terminator would be prefered to minimise the probability of discovery.
Both terminators move westwards 15 degrees longitude per hour, or a quarter of a degree of longitude per minute. For fuel exhaustion at 00:16 - 00:17, simply move both terminators west by 4 degrees of longitude.
If an intentional ditch was the objective, twilight to dawn would be optimal from a pilot's perspective. Since we know that the aircraft was still in the air at 00:19 UTC it is reasonable to assume that the planned water entry would have to be somewhere between just east of the 00:20 utc terminator position, (which would be 5 degrees of longitude west of the 00:00 utc terminator in the plot) and the 00:00 utc shown.
If the intention was simply to let it run out of fuel and crash, west of the terminator would be prefered to minimise the probability of discovery.
