Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 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)
 12/24/2017   02:52:19   (  79.47,  33.66) 12/24/2017   02:51:07  (  79.47,  33.66)    0.21                72
 12/24/2017   03:41:39   ( -79.69,-157.10) 12/24/2017   03:41:45  ( -79.69,-157.21)    2.43                 6
 12/26/2017   19:08:45   (  79.62, 150.63) 12/26/2017   19:07:55  (  79.63, 150.77)    2.96                50
 12/26/2017   19:58:07   ( -79.81, -40.36) 12/26/2017   19:58:35  ( -79.81, -40.33)    0.46                28
 12/29/2017   11:25:15   (  79.66, -93.24) 12/29/2017   11:24:48  (  79.66, -93.23)    0.31                27
 12/29/2017   12:14:38   ( -79.81,  75.52) 12/29/2017   12:15:29  ( -79.80,  75.40)    2.45                51
 01/01/2018   03:41:45   (  79.69,  22.86) 01/01/2018   03:41:41  (  79.68,  22.77)    1.94                 4
 01/01/2018   04:31:05   ( -79.94,-167.52) 01/01/2018   04:32:18  ( -79.95,-167.43)    1.73                73
 01/03/2018   19:08:53   ( -79.57, -29.78) 01/03/2018   19:07:54  ( -79.57, -29.72)    1.28                59