Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 9.  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   ( -79.20, -32.35) 07/11/2017   19:07:33  ( -79.21, -32.30)    1.18                51
 07/11/2017   19:57:43   (  79.46, 136.98) 07/11/2017   19:58:10  (  79.45, 136.93)    1.02                27
 07/14/2017   11:24:50   ( -79.29,  84.13) 07/14/2017   11:24:25  ( -79.30,  84.15)    0.53                25
 07/14/2017   12:14:10   (  79.51,-106.80) 07/14/2017   12:15:03  (  79.50,-106.88)    1.69                53
 07/17/2017   02:53:42   (  74.11,  12.82) 07/17/2017   02:52:29  (  74.35,  11.26)   54.70                73
 07/17/2017   03:41:16   ( -79.38,-159.41) 07/17/2017   03:41:17  ( -79.38,-159.39)    0.45                 1
 07/19/2017   19:08:22   (  79.17, 147.46) 07/19/2017   19:07:32  (  79.17, 147.43)    0.64                50
 07/19/2017   19:57:42   ( -79.46, -42.98) 07/19/2017   19:58:09  ( -79.47, -42.94)    0.93                27
 07/22/2017   11:24:46   (  79.29, -95.91) 07/22/2017   11:24:22  (  79.29, -95.90)    0.16                24