Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 17.  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)
 01/19/2018   19:10:28   ( -75.67, -47.22) 01/19/2018   19:09:14  ( -75.93, -48.56)   46.38                74
 01/19/2018   19:58:19   (  79.82, 139.75) 01/19/2018   19:58:20  (  79.82, 139.89)    2.71                 1
 01/22/2018   11:25:29   ( -79.60,  86.35) 01/22/2018   11:24:36  ( -79.60,  86.36)    0.47                53
 01/22/2018   12:14:50   (  79.78,-104.66) 01/22/2018   12:15:15  (  79.78,-104.77)    2.33                25
 01/25/2018   03:41:56   ( -79.71,-156.98) 01/25/2018   03:41:26  ( -79.71,-156.89)    1.88                30
 01/25/2018   04:31:17   (  79.88,  12.02) 01/25/2018   04:32:05  (  79.88,  12.00)    0.48                48
 01/27/2018   19:58:25   ( -79.70, -41.15) 01/27/2018   19:58:19  ( -79.69, -41.27)    2.61                 6
 01/27/2018   20:47:43   (  79.98, 128.69) 01/27/2018   20:48:54  (  79.98, 128.78)    1.83                71
 01/30/2018   11:25:31   (  79.57, -93.88) 01/30/2018   11:24:31  (  79.57, -93.93)    0.92                60