Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 8 22.  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)
 08/23/2017   10:35:25   ( -79.01,  94.76) 08/23/2017   10:34:17  ( -79.01,  94.66)    2.16                68
 08/23/2017   11:24:42   (  79.37, -95.37) 08/23/2017   11:24:51  (  79.36, -95.39)    0.40                 9
 08/26/2017   02:51:52   ( -79.10,-148.85) 08/26/2017   02:51:12  ( -79.09,-148.98)    2.93                40
 08/26/2017   03:41:09   (  79.45,  21.04) 08/26/2017   03:41:46  (  79.44,  21.00)    0.94                37
 08/28/2017   19:08:18   ( -79.21, -32.23) 08/28/2017   19:08:06  ( -79.21, -32.37)    3.00                12
 08/28/2017   19:57:36   (  79.52, 137.43) 08/28/2017   19:58:41  (  79.52, 137.39)    0.79                65
 08/31/2017   10:35:23   (  79.08, -84.82) 08/31/2017   10:34:21  (  79.09, -84.79)    0.69                62
 08/31/2017   11:24:44   ( -79.33,  84.36) 08/31/2017   11:25:00  ( -79.32,  84.25)    2.37                16
 09/03/2017   02:51:47   (  79.23,  31.97) 09/03/2017   02:51:13  (  79.23,  32.06)    2.09                34