Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 7 22.  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)
 07/22/2018   19:08:56   (  79.15, 147.30) 07/22/2018   19:07:43  (  79.14, 147.23)    1.67                73
 07/22/2018   19:58:15   ( -79.47, -42.98) 07/22/2018   19:58:19  ( -79.47, -42.96)    0.35                 4
 07/25/2018   11:25:20   (  79.32, -95.73) 07/25/2018   11:24:35  (  79.32, -95.65)    1.68                45
 07/25/2018   12:14:43   ( -79.48,  73.00) 07/25/2018   12:15:16  ( -79.48,  72.89)    2.48                33
 07/28/2018   03:41:46   (  79.37,  20.47) 07/28/2018   03:41:30  (  79.36,  20.43)    1.09                16
 07/28/2018   04:31:06   ( -79.64,-169.98) 07/28/2018   04:32:07  ( -79.65,-169.90)    1.55                61
 07/30/2018   19:08:53   ( -79.19, -32.43) 07/30/2018   19:07:48  ( -79.19, -32.43)    0.08                65
 07/30/2018   19:58:10   (  79.53, 137.44) 07/30/2018   19:58:22  (  79.53, 137.58)    2.94                12
 08/02/2018   11:25:19   ( -79.27,  83.98) 08/02/2018   11:24:43  ( -79.26,  83.90)    1.92                36
 08/02/2018   12:14:37   (  79.57,-106.38) 08/02/2018   12:15:18  (  79.57,-106.34)    0.85                41
 08/05/2018   03:41:43   ( -79.43,-159.11) 08/05/2018   03:41:35  ( -79.44,-158.98)    2.97                 8