Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 9.  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   (  79.57, 150.25) 01/11/2018   19:07:48  (  79.57, 150.32)    1.44                68
 01/11/2018   19:58:19   ( -79.72, -41.03) 01/11/2018   19:58:29  ( -79.71, -41.14)    2.19                10
 01/14/2018   11:25:24   (  79.65, -93.28) 01/14/2018   11:24:39  (  79.65, -93.20)    1.60                45
 01/14/2018   12:14:47   ( -79.80,  75.48) 01/14/2018   12:15:20  ( -79.79,  75.36)    2.30                33
 01/17/2018   03:41:52   (  79.73,  23.18) 01/17/2018   03:41:30  (  79.73,  23.29)    2.21                22
 01/17/2018   04:31:15   ( -79.88,-168.04) 01/17/2018   04:32:11  ( -79.87,-168.13)    1.98                56
 01/19/2018   19:10:24   ( -75.85, -46.69) 01/19/2018   19:09:10  ( -76.10, -47.98)   44.45                74
 01/19/2018   19:58:21   (  79.73, 139.05) 01/19/2018   19:58:23  (  79.72, 138.91)    3.16                 2
 01/22/2018   11:25:28   ( -79.62,  86.49) 01/22/2018   11:24:35  ( -79.62,  86.54)    1.05                53