Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 4 1.  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)
 04/03/2016   19:09:00   ( -79.38, -31.20) 04/03/2016   19:08:41  ( -79.38, -31.20)    0.01                19
 04/03/2016   19:58:18   (  79.68, 138.52) 04/03/2016   19:59:16  (  79.68, 138.62)    2.02                58
 04/06/2016   10:36:06   (  79.22, -83.97) 04/06/2016   10:34:56  (  79.22, -83.93)    0.86                70
 04/06/2016   11:25:28   ( -79.43,  85.00) 04/06/2016   11:25:36  ( -79.42,  84.90)    2.25                 8
 04/09/2016   02:52:32   (  79.30,  32.40) 04/09/2016   02:51:49  (  79.30,  32.40)    0.10                43
 04/09/2016   03:41:51   ( -79.62,-157.80) 04/09/2016   03:42:25  ( -79.62,-157.65)    3.10                34
 04/11/2016   19:08:58   (  79.41, 148.98) 04/11/2016   19:08:42  (  79.41, 148.99)    0.22                16
 04/11/2016   19:58:20   ( -79.61, -41.97) 04/11/2016   19:59:22  ( -79.60, -42.12)    3.10                62
 04/14/2016   10:36:06   ( -79.21,  95.92) 04/14/2016   10:35:00  ( -79.20,  95.88)    0.97                66