Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 12 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)
 12/18/2016   10:35:18   (  79.37, -82.90) 12/18/2016   10:34:33  (  79.36, -83.04)    2.99                45
 12/18/2016   11:24:37   ( -79.68,  86.88) 12/18/2016   11:25:09  ( -79.68,  86.89)    0.39                32
 12/21/2016   02:51:43   (  79.54,  34.15) 12/21/2016   02:51:21  (  79.55,  34.21)    1.41                22
 12/21/2016   03:41:05   ( -79.73,-156.82) 12/21/2016   03:42:01  ( -79.73,-156.91)    1.86                56
 12/23/2016   18:19:45   ( -77.10, -30.09) 12/23/2016   18:18:31  ( -77.26, -30.90)   26.71                74
 12/23/2016   19:08:12   (  79.59, 150.39) 12/23/2016   19:08:14  (  79.59, 150.39)    0.28                 2
 12/26/2016   10:35:22   ( -79.38,  97.15) 12/26/2016   10:34:31  ( -79.37,  97.02)    2.99                51
 12/26/2016   11:24:40   (  79.67, -93.14) 12/26/2016   11:25:06  (  79.67, -93.16)    0.51                26
 12/29/2016   02:51:47   ( -79.57,-145.64) 12/29/2016   02:51:19  ( -79.58,-145.49)    3.16                28