Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 5 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)
 05/19/2016   02:52:10   ( -79.21,-148.25) 05/19/2016   02:51:59  ( -79.20,-148.39)    2.99                11
 05/19/2016   03:41:26   (  79.59,  21.94) 05/19/2016   03:42:32  (  79.59,  22.04)    1.89                66
 05/21/2016   18:19:14   (  79.06, 159.08) 05/21/2016   18:18:13  (  79.05, 159.03)    1.28                61
 05/21/2016   19:08:34   ( -79.34, -31.50) 05/21/2016   19:08:50  ( -79.34, -31.53)    0.72                16
 05/24/2016   10:35:37   (  79.22, -84.03) 05/24/2016   10:35:03  (  79.23, -83.92)    2.48                34
 05/24/2016   11:24:56   ( -79.54,  85.72) 05/24/2016   11:25:39  ( -79.55,  85.87)    3.10                43
 05/27/2016   02:52:01   (  79.33,  32.57) 05/27/2016   02:51:55  (  79.33,  32.63)    1.26                 6
 05/27/2016   03:41:22   ( -79.57,-158.17) 05/27/2016   03:42:33  ( -79.58,-158.08)    1.93                71
 05/29/2016   18:19:05   ( -79.17, -20.23) 05/29/2016   18:18:09  ( -79.18, -20.10)    2.81                56