Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 25.  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)
 06/26/2018   03:41:52   (  79.36,  20.41) 06/26/2018   03:41:28  (  79.36,  20.35)    1.32                24
 06/26/2018   04:31:13   ( -79.60,-170.28) 06/26/2018   04:32:06  ( -79.59,-170.38)    2.14                53
 06/28/2018   19:10:16   ( -75.72, -47.14) 06/28/2018   19:09:02  ( -75.95, -48.32)   41.03                74
 06/28/2018   19:58:17   (  79.48, 137.09) 06/28/2018   19:58:19  (  79.48, 137.12)    0.65                 2
 07/01/2018   11:25:22   ( -79.34,  84.43) 07/01/2018   11:24:32  ( -79.35,  84.56)    2.93                50
 07/01/2018   12:14:41   (  79.59,-106.23) 07/01/2018   12:15:09  (  79.60,-106.09)    2.98                28
 07/04/2018   03:41:49   ( -79.38,-159.44) 07/04/2018   03:41:26  ( -79.38,-159.47)    0.71                23
 07/04/2018   04:31:08   (  79.62,   9.89) 07/04/2018   04:32:03  (  79.62,   9.86)    0.76                55
 07/06/2018   19:08:52   (  79.27, 148.10) 07/06/2018   19:07:38  (  79.28, 148.24)    3.05                74
 07/06/2018   19:58:13   ( -79.53, -42.56) 07/06/2018   19:58:16  ( -79.53, -42.44)    2.51                 3
 07/09/2018   11:25:19   (  79.30, -95.83) 07/09/2018   11:24:32  (  79.30, -95.83)    0.14                47