Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 6 18.  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)
 06/20/2016   02:51:58   ( -79.30,-147.64) 06/20/2016   02:51:52  ( -79.30,-147.61)    0.51                 6
 06/20/2016   03:41:18   (  79.53,  21.51) 06/20/2016   03:42:30  (  79.52,  21.43)    1.89                72
 06/22/2016   18:19:02   (  79.16, 159.71) 06/22/2016   18:18:05  (  79.17, 159.84)    2.83                57
 06/22/2016   19:08:25   ( -79.33, -31.59) 06/22/2016   19:08:46  ( -79.32, -31.68)    2.04                21
 06/25/2016   10:35:28   (  79.21, -84.06) 06/25/2016   10:34:58  (  79.22, -84.01)    1.03                30
 06/25/2016   11:24:48   ( -79.50,  85.45) 06/25/2016   11:25:35  ( -79.51,  85.57)    2.70                47
 06/28/2016   02:51:52   (  79.30,  32.38) 06/28/2016   02:51:49  (  79.30,  32.39)    0.17                 3
 06/28/2016   03:41:00   ( -80.02,-154.74) 06/28/2016   03:42:14  ( -79.96,-154.55)    7.23                74
 06/30/2016   18:18:57   ( -79.17, -20.24) 06/30/2016   18:18:03  ( -79.17, -20.11)    2.86                54