Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 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)
 01/30/2018   11:25:31   (  79.58, -93.79) 01/30/2018   11:24:31  (  79.58, -93.82)    0.59                60
 01/30/2018   12:14:51   ( -79.84,  75.80) 01/30/2018   12:15:08  ( -79.83,  75.81)    0.33                17
 02/02/2018   03:41:56   (  79.70,  23.03) 02/02/2018   03:41:19  (  79.71,  23.16)    2.78                37
 02/02/2018   04:31:19   ( -79.86,-168.16) 02/02/2018   04:32:00  ( -79.85,-168.31)    3.14                41
 02/04/2018   19:58:24   (  79.75, 139.29) 02/04/2018   19:58:11  (  79.75, 139.30)    0.22                13
 02/04/2018   20:47:46   ( -79.94, -51.59) 02/04/2018   20:48:50  ( -79.94, -51.56)    0.52                64
 02/07/2018   11:25:32   ( -79.59,  86.33) 02/07/2018   11:24:25  ( -79.59,  86.30)    0.78                67
 02/07/2018   12:14:52   (  79.80,-104.48) 02/07/2018   12:15:03  (  79.79,-104.57)    1.85                11
 02/10/2018   03:42:00   ( -79.64,-157.46) 02/10/2018   03:41:17  ( -79.63,-157.58)    2.52                43