Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 7 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)
 07/28/2018   03:41:46   (  79.37,  20.52) 07/28/2018   03:41:30  (  79.37,  20.48)    0.98                16
 07/28/2018   04:31:06   ( -79.64,-169.95) 07/28/2018   04:32:07  ( -79.65,-169.87)    1.79                61
 07/30/2018   19:08:53   ( -79.19, -32.41) 07/30/2018   19:07:48  ( -79.19, -32.40)    0.38                65
 07/30/2018   19:58:13   (  79.42, 136.70) 07/30/2018   19:58:26  (  79.41, 136.55)    3.12                13
 08/02/2018   11:25:19   ( -79.27,  83.99) 08/02/2018   11:24:43  ( -79.27,  83.94)    1.15                36
 08/02/2018   12:14:37   (  79.57,-106.36) 08/02/2018   12:15:18  (  79.58,-106.29)    1.54                41
 08/05/2018   03:41:44   ( -79.35,-159.63) 08/05/2018   03:41:37  ( -79.34,-159.73)    2.27                 7
 08/05/2018   04:31:02   (  79.64,  10.05) 08/05/2018   04:32:12  (  79.64,  10.06)    0.28                70
 08/07/2018   19:08:48   (  79.22, 147.76) 08/07/2018   19:07:52  (  79.21, 147.74)    0.48                56