Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 10 16.  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)
 10/18/2017   10:35:24   (  79.42, -82.59) 10/18/2017   10:34:31  (  79.42, -82.57)    0.43                53
 10/18/2017   11:24:45   ( -79.66,  86.71) 10/18/2017   11:25:09  ( -79.66,  86.73)    0.50                24
 10/21/2017   02:51:51   (  79.50,  33.78) 10/21/2017   02:51:24  (  79.50,  33.77)    0.23                27
 10/21/2017   03:41:12   ( -79.73,-156.87) 10/21/2017   03:42:02  ( -79.73,-156.89)    0.28                50
 10/23/2017   19:08:16   (  79.60, 150.38) 10/23/2017   19:08:15  (  79.60, 150.38)    0.04                 1
 10/23/2017   19:56:17   ( -81.73, -11.86) 10/23/2017   19:57:31  ( -81.32, -11.60)   46.37                74
 10/26/2017   10:35:23   ( -79.45,  97.57) 10/26/2017   10:34:30  ( -79.45,  97.64)    1.57                53
 10/26/2017   11:24:42   (  79.69, -93.05) 10/26/2017   11:25:07  (  79.69, -93.01)    0.88                25
 10/29/2017   02:51:48   ( -79.58,-145.64) 10/29/2017   02:51:21  ( -79.59,-145.50)    3.17                27