Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 11.  Predictions up to the next  14.0 days:

     Date     Time(AURA) AURA Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/11/2017   19:08:24   ( -79.23, -32.16) 07/11/2017   19:07:33  ( -79.23, -32.11)    1.13                51
 07/11/2017   19:57:44   (  79.45, 136.93) 07/11/2017   19:58:11  (  79.45, 136.87)    1.16                27
 07/14/2017   11:24:50   ( -79.29,  84.07) 07/14/2017   11:24:25  ( -79.29,  84.09)    0.28                25
 07/14/2017   12:14:10   (  79.50,-106.84) 07/14/2017   12:15:03  (  79.50,-106.94)    2.03                53
 07/17/2017   02:53:47   (  73.84,  12.22) 07/17/2017   02:52:34  (  74.10,  10.60)   57.29                73
 07/17/2017   03:41:16   ( -79.37,-159.46) 07/17/2017   03:41:17  ( -79.37,-159.46)    0.10                 1
 07/19/2017   19:08:22   (  79.16, 147.43) 07/19/2017   19:07:32  (  79.16, 147.36)    1.60                50
 07/19/2017   19:57:42   ( -79.46, -43.01) 07/19/2017   19:58:09  ( -79.46, -43.01)    0.03                27
 07/22/2017   11:24:48   (  79.24, -96.18) 07/22/2017   11:24:24  (  79.24, -96.24)    1.25                24
 07/22/2017   12:14:08   ( -79.54,  73.41) 07/22/2017   12:15:01  ( -79.54,  73.44)    0.60                53
 07/25/2017   02:52:58   ( -76.21,-161.48) 07/25/2017   02:51:44  ( -76.40,-162.45)   32.74                74