Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 1 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)
 01/24/2017   19:08:18   (  79.60, 150.53) 01/24/2017   19:08:00  (  79.61, 150.57)    1.12                18
 01/24/2017   19:57:39   ( -79.83, -40.16) 01/24/2017   19:58:38  ( -79.83, -40.09)    1.55                59
 01/27/2017   10:35:30   ( -79.36,  97.06) 01/27/2017   10:34:17  ( -79.35,  96.94)    2.51                73
 01/27/2017   11:24:47   (  79.69, -92.95) 01/27/2017   11:24:51  (  79.70, -92.85)    2.17                 4
 01/30/2017   02:51:58   ( -79.48,-146.20) 01/30/2017   02:51:07  ( -79.48,-146.25)    1.06                51
 01/30/2017   03:41:17   (  79.70,  23.01) 01/30/2017   03:41:44  (  79.69,  22.88)    2.63                27
 02/01/2017   19:08:25   ( -79.60, -29.48) 02/01/2017   19:07:56  ( -79.61, -29.43)    0.99                29
 02/01/2017   19:57:46   (  79.78, 139.48) 02/01/2017   19:58:35  (  79.78, 139.45)    0.52                49
 02/04/2017   11:24:56   ( -79.61,  86.42) 02/04/2017   11:24:50  ( -79.60,  86.30)    2.72                 6