Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 9 29.  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   18:20:34   (  74.72, 142.53) 09/29/2017   18:19:21  (  74.95, 141.05)   50.13                73
 09/29/2017   19:08:14   ( -79.58, -29.75) 09/29/2017   19:08:15  ( -79.58, -29.70)    0.97                 1
 10/02/2017   10:35:22   (  79.40, -82.79) 10/02/2017   10:34:31  (  79.40, -82.79)    0.27                51
 10/02/2017   11:24:42   ( -79.67,  86.74) 10/02/2017   11:25:08  ( -79.67,  86.78)    0.88                26
 10/05/2017   02:51:49   (  79.51,  33.86) 10/05/2017   02:51:23  (  79.51,  33.91)    1.04                26
 10/05/2017   03:41:10   ( -79.74,-156.83) 10/05/2017   03:42:01  ( -79.75,-156.75)    1.82                51
 10/07/2017   19:08:19   (  79.50, 149.67) 10/07/2017   19:08:19  (  79.49, 149.52)    3.17                 0
 10/07/2017   19:55:49   ( -81.82,   0.13) 10/07/2017   19:57:02  ( -81.25,   0.08)   62.94                73
 10/10/2017   10:35:24   ( -79.42,  97.35) 10/10/2017   10:34:31  ( -79.42,  97.41)    1.27                53
 10/10/2017   11:24:43   (  79.67, -93.25) 10/10/2017   11:25:08  (  79.67, -93.24)    0.21                25
 10/13/2017   02:51:52   ( -79.47,-146.41) 10/13/2017   02:51:25  ( -79.47,-146.47)    1.18                27