Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 23.  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)
 01/25/2018   03:41:55   ( -79.72,-156.89) 01/25/2018   03:41:25  ( -79.72,-156.79)    2.11                30
 01/25/2018   04:31:16   (  79.90,  12.16) 01/25/2018   04:32:04  (  79.89,  12.14)    0.44                48
 01/27/2018   19:58:25   ( -79.71, -41.07) 01/27/2018   19:58:19  ( -79.70, -41.18)    2.13                 6
 01/27/2018   20:47:43   (  79.99, 128.80) 01/27/2018   20:48:54  (  79.99, 128.92)    2.22                71
 01/30/2018   11:25:30   (  79.61, -93.53) 01/30/2018   11:24:30  (  79.61, -93.54)    0.29                60
 01/30/2018   12:14:51   ( -79.84,  75.81) 01/30/2018   12:15:08  ( -79.84,  75.85)    0.64                17
 02/02/2018   03:41:58   (  79.63,  22.46) 02/02/2018   03:41:22  (  79.62,  22.32)    2.96                36
 02/02/2018   04:31:19   ( -79.86,-168.16) 02/02/2018   04:32:00  ( -79.85,-168.28)    2.47                41
 02/04/2018   19:58:24   (  79.75, 139.25) 02/04/2018   19:58:11  (  79.75, 139.30)    1.20                13