Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 4 16.  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)
 04/17/2016   02:52:29   ( -79.24,-148.04) 04/17/2016   02:51:54  ( -79.24,-148.05)    0.36                35
 04/17/2016   03:41:46   (  79.58,  21.89) 04/17/2016   03:42:28  (  79.59,  22.02)    2.74                42
 04/19/2016   19:08:54   ( -79.31, -31.68) 04/19/2016   19:08:48  ( -79.31, -31.79)    2.43                 6
 04/19/2016   19:58:11   (  79.65, 138.26) 04/19/2016   19:59:22  (  79.65, 138.31)    0.93                71
 04/22/2016   10:35:56   (  79.21, -84.10) 04/22/2016   10:35:01  (  79.21, -84.07)    0.85                55
 04/22/2016   11:25:15   ( -79.53,  85.65) 04/22/2016   11:25:37  ( -79.53,  85.80)    3.12                22
 04/25/2016   02:52:19   (  79.33,  32.61) 04/25/2016   02:51:53  (  79.34,  32.68)    1.55                26
 04/25/2016   03:41:41   ( -79.54,-158.38) 04/25/2016   03:42:33  ( -79.53,-158.50)    2.74                52
 04/27/2016   18:19:28   ( -78.95, -21.51) 04/27/2016   18:18:14  ( -78.97, -21.56)    1.96                74