Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 7.  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)
 09/08/2017   10:35:22   ( -79.04,  94.96) 09/08/2017   10:34:28  ( -79.03,  94.84)    2.89                54
 09/08/2017   11:24:39   (  79.40, -95.14) 09/08/2017   11:25:02  (  79.40, -95.15)    0.42                23
 09/11/2017   02:51:45   ( -79.24,-147.90) 09/11/2017   02:51:19  ( -79.25,-147.85)    1.00                26
 09/11/2017   03:41:06   (  79.44,  21.01) 09/11/2017   03:41:58  (  79.43,  20.90)    2.49                52
 09/13/2017   18:19:22   (  77.71, 152.34) 09/13/2017   18:18:08  (  77.82, 151.94)   15.44                74
 09/13/2017   19:08:11   ( -79.32, -31.54) 09/13/2017   19:08:14  ( -79.32, -31.56)    0.38                 3
 09/16/2017   10:35:18   (  79.06, -84.91) 09/16/2017   10:34:33  (  79.05, -85.04)    2.90                45
 09/16/2017   11:24:36   ( -79.42,  85.02) 09/16/2017   11:25:08  ( -79.42,  85.00)    0.62                32
 09/19/2017   02:51:41   (  79.19,  31.80) 09/19/2017   02:51:25  (  79.19,  31.72)    1.77                16