Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 9 23.  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)
 09/24/2015   17:32:26   ( -71.38, -31.89) 09/24/2015   17:31:13  ( -71.62, -33.52)   63.37                73
 09/24/2015   18:19:14   (  79.08, 159.20) 09/24/2015   18:19:09  (  79.08, 159.22)    0.69                 5
 09/24/2015   19:08:32   ( -79.44, -30.87) 09/24/2015   19:09:39  ( -79.45, -30.73)    3.08                67
 09/28/2015   01:25:43   (  78.85,  51.25) 09/28/2015   01:25:01  (  78.85,  51.22)    0.81                42
 09/28/2015   02:15:05   ( -79.06,-139.86) 09/28/2015   02:15:14  ( -79.05,-139.98)    2.71                 9