Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 14.  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)
 09/16/2017   10:35:21   (  79.10, -84.71) 09/16/2017   10:34:32  (  79.09, -84.76)    1.26                49
 09/16/2017   11:24:39   ( -79.41,  84.94) 09/16/2017   11:25:07  ( -79.41,  84.99)    1.27                28
 09/19/2017   02:51:47   (  79.26,  32.17) 09/19/2017   02:51:23  (  79.26,  32.25)    1.75                24
 09/19/2017   03:41:09   ( -79.45,-158.89) 09/19/2017   03:42:03  ( -79.44,-159.00)    2.42                54
 09/21/2017   18:20:06   ( -75.96, -34.03) 09/21/2017   18:18:52  ( -76.15, -35.02)   33.83                74
 09/21/2017   19:08:17   (  79.29, 148.27) 09/21/2017   19:08:19  (  79.29, 148.23)    1.02                 2
 09/24/2017   10:35:27   ( -79.09,  95.24) 09/24/2017   10:34:37  ( -79.09,  95.22)    0.48                50
 09/24/2017   11:24:47   (  79.32, -95.66) 09/24/2017   11:25:15  (  79.31, -95.81)    3.17                28
 09/27/2017   02:51:55   ( -79.16,-148.48) 09/27/2017   02:51:31  ( -79.15,-148.58)    2.39                24