Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 10.  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)
 01/11/2018   19:08:56   (  79.56, 150.18) 01/11/2018   19:07:48  (  79.56, 150.25)    1.40                68
 01/11/2018   19:58:18   ( -79.74, -40.83) 01/11/2018   19:58:28  ( -79.74, -40.94)    2.18                10
 01/14/2018   11:25:24   (  79.64, -93.33) 01/14/2018   11:24:39  (  79.65, -93.26)    1.46                45
 01/14/2018   12:14:47   ( -79.79,  75.41) 01/14/2018   12:15:20  ( -79.79,  75.29)    2.41                33
 01/17/2018   03:41:52   (  79.72,  23.13) 01/17/2018   03:41:30  (  79.73,  23.22)    1.89                22
 01/17/2018   04:31:15   ( -79.87,-168.09) 01/17/2018   04:32:11  ( -79.86,-168.20)    2.27                56
 01/19/2018   19:10:29   ( -75.65, -47.29) 01/19/2018   19:09:15  ( -75.91, -48.64)   46.65                74
 01/19/2018   19:58:20   (  79.80, 139.57) 01/19/2018   19:58:21  (  79.80, 139.70)    2.71                 1
 01/22/2018   11:25:28   ( -79.62,  86.47) 01/22/2018   11:24:35  ( -79.62,  86.48)    0.24                53