Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 24.  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)
 05/25/2018   03:41:56   (  79.49,  21.30) 05/25/2018   03:41:27  (  79.50,  21.44)    2.89                29
 05/25/2018   04:31:19   ( -79.64,-169.99) 05/25/2018   04:32:08  ( -79.64,-170.05)    1.46                49
 05/27/2018   19:58:21   (  79.57, 137.70) 05/27/2018   19:58:19  (  79.57, 137.81)    2.43                 2
 05/27/2018   20:46:39   ( -81.51, -31.74) 05/27/2018   20:47:53  ( -81.16, -31.22)   39.30                74
 05/30/2018   11:25:30   ( -79.30,  84.14) 05/30/2018   11:24:38  ( -79.29,  84.04)    2.38                52
 05/30/2018   12:14:47   (  79.63,-105.93) 05/30/2018   12:15:12  (  79.64,-105.82)    2.33                25
 06/02/2018   03:41:56   ( -79.37,-159.51) 06/02/2018   03:41:31  ( -79.36,-159.63)    2.61                25
 06/02/2018   04:31:13   (  79.70,  10.42) 06/02/2018   04:32:05  (  79.71,  10.55)    2.62                52
 06/04/2018   19:10:08   (  76.20, 134.33) 06/04/2018   19:08:55  (  76.37, 133.13)   37.26                73
 06/04/2018   19:58:21   ( -79.48, -42.92) 06/04/2018   19:58:23  ( -79.47, -43.03)    2.42                 2
 06/07/2018   11:25:24   (  79.33, -95.68) 06/07/2018   11:24:36  (  79.32, -95.75)    1.63                48