Folder: "900a 11a and others" 

File zero is 18:28:25 UTC which is 11:28:25 MST. 

File five is 15:42:49 UTC which is 08:42:49 MST. 

File six is 17:47:06 UTC which is 10:47:06 MST. File six ends at 18:28:39 UTC which is slightly after file zero starts???

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Folder: "117p" 

File zero (the only set) is 21:10:42 UTC = 14:10:42 MST = 2:10:42 pm MST
Ends at 21:57:29 UTC (i.e. about a 47 minute flight). 

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Folder "400p"

File one (the only set) is 22:57:27 UTC = 15:57:27 MST = 3:57:27 pm MST
Ends at 23:54:21 UTC = 4:54:21 pm MST