Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 27.  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)
 06/28/2018   19:10:15   ( -75.76, -47.02) 06/28/2018   19:09:01  ( -75.98, -48.20)   40.61                74
 06/28/2018   19:58:17   (  79.47, 137.05) 06/28/2018   19:58:19  (  79.47, 137.08)    0.75                 2
 07/01/2018   11:25:24   ( -79.25,  83.86) 07/01/2018   11:24:35  ( -79.24,  83.72)    3.15                49
 07/01/2018   12:14:43   (  79.51,-106.82) 07/01/2018   12:15:12  (  79.50,-106.97)    3.19                29
 07/04/2018   03:41:49   ( -79.37,-159.52) 07/04/2018   03:41:26  ( -79.37,-159.53)    0.23                23
 07/04/2018   04:31:08   (  79.61,   9.82) 07/04/2018   04:32:03  (  79.61,   9.81)    0.23                55
 07/06/2018   19:08:55   (  79.14, 147.27) 07/06/2018   19:07:42  (  79.13, 147.16)    2.38                73
 07/06/2018   19:58:15   ( -79.44, -43.18) 07/06/2018   19:58:19  ( -79.42, -43.31)    2.93                 4
 07/09/2018   11:25:18   (  79.32, -95.69) 07/09/2018   11:24:31  (  79.33, -95.62)    1.47                47