Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 28.  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)
 09/29/2017   18:20:15   (  75.68, 145.13) 09/29/2017   18:19:02  (  75.85, 143.97)   36.87                73
 09/29/2017   19:08:23   ( -79.25, -32.02) 09/29/2017   19:08:25  ( -79.24, -32.11)    2.07                 2
 10/02/2017   10:35:32   (  79.01, -85.23) 10/02/2017   10:34:43  (  79.01, -85.36)    2.78                49
 10/02/2017   11:24:51   ( -79.34,  84.45) 10/02/2017   11:25:19  ( -79.33,  84.35)    2.09                28
 10/05/2017   02:51:58   (  79.18,  31.64) 10/05/2017   02:51:35  (  79.17,  31.56)    1.77                23
 10/05/2017   03:41:18   ( -79.46,-158.87) 10/05/2017   03:42:12  ( -79.45,-158.93)    1.32                54
 10/07/2017   18:19:38   ( -77.66, -27.92) 10/07/2017   18:18:24  ( -77.76, -28.39)   15.38                74
 10/07/2017   19:08:25   (  79.29, 148.23) 10/07/2017   19:08:28  (  79.29, 148.24)    0.05                 3
 10/10/2017   10:35:35   ( -79.02,  94.77) 10/10/2017   10:34:47  ( -79.01,  94.65)    2.72                48