Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 4 23.  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)
 04/25/2016   02:52:21   (  79.29,  32.23) 04/25/2016   02:51:54  (  79.30,  32.36)    2.75                27
 04/25/2016   03:41:43   ( -79.49,-158.79) 04/25/2016   03:42:34  ( -79.48,-158.86)    1.61                51
 04/27/2016   18:20:31   ( -76.24, -33.24) 04/27/2016   18:19:17  ( -76.41, -34.15)   30.97                74
 04/27/2016   19:08:46   (  79.36, 148.56) 04/27/2016   19:08:48  (  79.36, 148.58)    0.43                 2
 04/30/2016   10:35:51   ( -79.15,  95.51) 04/30/2016   10:35:04  ( -79.16,  95.56)    1.23                47
 04/30/2016   11:25:10   (  79.41, -95.17) 04/30/2016   11:25:41  (  79.41, -95.21)    0.89                31
 05/03/2016   02:52:14   ( -79.28,-147.78) 05/03/2016   02:51:56  ( -79.28,-147.74)    0.72                18
 05/03/2016   03:41:34   (  79.50,  21.31) 05/03/2016   03:42:34  (  79.50,  21.26)    1.09                60
 05/05/2016   18:19:18   (  79.07, 159.16) 05/05/2016   18:18:12  (  79.07, 159.17)    0.30                66