Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 30.  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)
 02/02/2018   03:41:56   (  79.71,  23.11) 02/02/2018   03:41:19  (  79.72,  23.24)    2.74                37
 02/02/2018   04:31:20   ( -79.83,-168.38) 02/02/2018   04:32:01  ( -79.82,-168.53)    3.06                41
 02/04/2018   19:58:24   (  79.76, 139.36) 02/04/2018   19:58:11  (  79.76, 139.37)    0.31                13
 02/04/2018   20:47:46   ( -79.95, -51.53) 02/04/2018   20:48:50  ( -79.95, -51.50)    0.63                64
 02/07/2018   11:25:32   ( -79.60,  86.37) 02/07/2018   11:24:25  ( -79.59,  86.35)    0.59                67
 02/07/2018   12:14:52   (  79.81,-104.42) 02/07/2018   12:15:03  (  79.80,-104.50)    1.73                11
 02/10/2018   03:41:59   ( -79.64,-157.42) 02/10/2018   03:41:16  ( -79.63,-157.53)    2.20                43
 02/10/2018   04:31:19   (  79.85,  11.78) 02/10/2018   04:31:54  (  79.84,  11.63)    3.13                35
 02/12/2018   19:58:24   ( -79.79, -40.43) 02/12/2018   19:58:04  ( -79.80, -40.28)    3.13                20