Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 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)
 01/27/2018   19:58:25   ( -79.71, -41.06) 01/27/2018   19:58:19  ( -79.70, -41.17)    2.37                 6
 01/27/2018   20:47:44   (  79.96, 128.54) 01/27/2018   20:48:55  (  79.97, 128.63)    1.95                71
 01/30/2018   11:25:31   (  79.58, -93.77) 01/30/2018   11:24:31  (  79.58, -93.80)    0.77                60
 01/30/2018   12:14:51   ( -79.81,  75.56) 01/30/2018   12:15:08  ( -79.81,  75.56)    0.20                17
 02/02/2018   03:41:56   (  79.71,  23.05) 02/02/2018   03:41:19  (  79.71,  23.16)    2.27                37
 02/02/2018   04:31:17   ( -79.93,-167.56) 02/02/2018   04:31:57  ( -79.94,-167.42)    2.79                40
 02/04/2018   19:58:25   (  79.72, 139.04) 02/04/2018   19:58:12  (  79.72, 139.00)    0.74                13
 02/04/2018   20:47:46   ( -79.95, -51.55) 02/04/2018   20:48:50  ( -79.94, -51.57)    0.43                64
 02/07/2018   11:25:33   ( -79.56,  86.10) 02/07/2018   11:24:26  ( -79.55,  86.00)    2.15                67