Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 4 30.  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)
 04/30/2016   10:35:51   ( -79.15,  95.50) 04/30/2016   10:35:04  ( -79.15,  95.52)    0.53                47
 04/30/2016   11:25:10   (  79.42, -95.13) 04/30/2016   11:25:41  (  79.41, -95.20)    1.72                31
 05/03/2016   02:52:15   ( -79.24,-148.03) 05/03/2016   02:51:57  ( -79.25,-148.03)    0.20                18
 05/03/2016   03:41:34   (  79.51,  21.36) 05/03/2016   03:42:34  (  79.50,  21.27)    1.87                60
 05/05/2016   18:19:19   (  79.04, 158.95) 05/05/2016   18:18:13  (  79.04, 158.94)    0.34                66
 05/05/2016   19:08:38   ( -79.36, -31.36) 05/05/2016   19:08:49  ( -79.37, -31.32)    0.90                11
 05/08/2016   10:35:40   (  79.23, -83.98) 05/08/2016   10:35:03  (  79.24, -83.89)    2.09                37
 05/08/2016   11:25:00   ( -79.51,  85.52) 05/08/2016   11:25:40  ( -79.52,  85.67)    3.08                40
 05/11/2016   02:52:03   (  79.29,  32.30) 05/11/2016   02:51:56  (  79.29,  32.27)    0.63                 7
 05/11/2016   03:41:23   ( -79.57,-158.17) 05/11/2016   03:42:33  ( -79.57,-158.15)    0.29                70
 05/13/2016   18:19:08   ( -79.08, -20.76) 05/13/2016   18:18:13  ( -79.08, -20.80)    0.84                55