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   18:20:13   (  75.78, 145.43) 09/29/2017   18:19:00  (  75.95, 144.29)   35.88                73
 09/29/2017   19:08:23   ( -79.25, -32.01) 09/29/2017   19:08:25  ( -79.24, -32.09)    1.72                 2
 10/02/2017   10:35:31   (  79.05, -85.00) 10/02/2017   10:34:42  (  79.04, -85.08)    1.97                49
 10/02/2017   11:24:50   ( -79.37,  84.69) 10/02/2017   11:25:18  ( -79.37,  84.63)    1.20                28
 10/05/2017   02:51:57   (  79.21,  31.85) 10/05/2017   02:51:34  (  79.21,  31.84)    0.26                23
 10/05/2017   03:41:17   ( -79.49,-158.66) 10/05/2017   03:42:11  ( -79.49,-158.63)    0.50                54
 10/07/2017   18:19:21   ( -78.39, -24.54) 10/07/2017   18:18:07  ( -78.44, -24.75)    7.11                74
 10/07/2017   19:08:22   (  79.35, 148.66) 10/07/2017   19:08:25  (  79.36, 148.79)    2.77                 3
 10/10/2017   10:35:32   ( -79.11,  95.37) 10/10/2017   10:34:44  ( -79.12,  95.43)    1.37                48