Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 6 21.  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)
 06/22/2016   18:19:03   (  79.14, 159.58) 06/22/2016   18:18:06  (  79.15, 159.69)    2.56                57
 06/22/2016   19:08:25   ( -79.34, -31.49) 06/22/2016   19:08:46  ( -79.33, -31.58)    2.08                21
 06/25/2016   10:35:28   (  79.20, -84.18) 06/25/2016   10:34:58  (  79.20, -84.15)    0.56                30
 06/25/2016   11:24:47   ( -79.51,  85.57) 06/25/2016   11:25:34  ( -79.52,  85.68)    2.39                47
 06/28/2016   02:51:53   (  79.29,  32.28) 06/28/2016   02:51:50  (  79.28,  32.25)    0.70                 3
 06/28/2016   03:41:04   ( -79.89,-155.73) 06/28/2016   03:42:18  ( -79.85,-155.59)    5.26                74
 06/30/2016   18:18:59   ( -79.11, -20.58) 06/30/2016   18:18:05  ( -79.12, -20.50)    1.83                54
 06/30/2016   19:08:18   (  79.37, 148.72) 06/30/2016   19:08:42  (  79.37, 148.66)    1.16                24
 07/03/2016   10:35:23   ( -79.23,  96.06) 07/03/2016   10:34:56  ( -79.24,  96.16)    2.15                27