Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 1 18.  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)
 01/20/2016   02:02:45   ( -79.28,-135.27) 01/20/2016   02:02:05  ( -79.29,-135.18)    1.74                40
 01/20/2016   02:52:05   (  79.51,  33.90) 01/20/2016   02:52:43  (  79.51,  33.91)    0.27                38
 01/22/2016   18:19:14   ( -79.34, -19.02) 01/22/2016   18:18:56  ( -79.34, -18.98)    0.80                18
 01/22/2016   19:08:33   (  79.60, 150.42) 01/22/2016   19:09:33  (  79.60, 150.40)    0.63                60
 01/25/2016   09:46:22   (  79.14, -72.06) 01/25/2016   09:45:09  (  79.15, -71.98)    1.97                73
 01/25/2016   10:35:41   ( -79.46,  97.67) 01/25/2016   10:35:45  ( -79.46,  97.75)    1.57                 4
 01/28/2016   02:02:50   (  79.17,  44.01) 01/28/2016   02:02:00  (  79.16,  43.92)    2.00                50
 01/28/2016   02:52:10   ( -79.45,-146.49) 01/28/2016   02:52:37  ( -79.45,-146.60)    2.32                27
 01/30/2016   18:19:15   (  79.34, 161.02) 01/30/2016   18:18:47  (  79.35, 161.11)    2.03                28