Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 8 27.  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)
 08/28/2017   19:08:15   ( -79.34, -31.44) 08/28/2017   19:08:02  ( -79.35, -31.30)    3.14                13
 08/28/2017   19:57:36   (  79.53, 137.51) 08/28/2017   19:58:41  (  79.52, 137.46)    1.20                65
 08/31/2017   10:35:22   (  79.09, -84.74) 08/31/2017   10:34:20  (  79.09, -84.74)    0.24                62
 08/31/2017   11:24:43   ( -79.33,  84.41) 08/31/2017   11:24:59  ( -79.32,  84.28)    3.04                16
 09/03/2017   02:51:48   (  79.20,  31.81) 09/03/2017   02:51:14  (  79.20,  31.84)    0.74                34
 09/03/2017   03:41:09   ( -79.44,-159.00) 09/03/2017   03:41:53  ( -79.43,-159.10)    2.30                44
 09/05/2017   19:08:13   (  79.34, 148.59) 09/05/2017   19:08:07  (  79.35, 148.69)    2.18                 6
 09/05/2017   19:57:35   ( -79.54, -42.43) 09/05/2017   19:58:47  ( -79.53, -42.48)    1.00                72
 09/08/2017   10:35:21   ( -79.13,  95.49) 09/08/2017   10:34:26  ( -79.14,  95.56)    1.40                55