Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 28.  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, -93.77) 01/30/2018   11:24:31  (  79.58, -93.80)    0.65                60
 01/30/2018   12:14:51   ( -79.84,  75.82) 01/30/2018   12:15:08  ( -79.84,  75.83)    0.34                17
 02/02/2018   03:41:56   (  79.71,  23.05) 02/02/2018   03:41:19  (  79.72,  23.18)    2.66                37
 02/02/2018   04:31:20   ( -79.82,-168.43) 02/02/2018   04:32:01  ( -79.82,-168.58)    3.20                41
 02/04/2018   19:58:24   (  79.76, 139.31) 02/04/2018   19:58:11  (  79.76, 139.31)    0.14                13
 02/04/2018   20:47:46   ( -79.94, -51.57) 02/04/2018   20:48:50  ( -79.95, -51.55)    0.41                64
 02/07/2018   11:25:32   ( -79.59,  86.34) 02/07/2018   11:24:25  ( -79.59,  86.31)    0.94                67
 02/07/2018   12:14:52   (  79.80,-104.46) 02/07/2018   12:15:03  (  79.79,-104.55)    2.04                11
 02/10/2018   03:42:00   ( -79.64,-157.44) 02/10/2018   03:41:17  ( -79.63,-157.57)    2.73                43