Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 6 21.  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)
 06/23/2018   11:25:26   (  79.26, -96.11) 06/23/2018   11:24:36  (  79.25, -96.23)    2.81                50
 06/23/2018   12:14:45   ( -79.58,  73.71) 06/23/2018   12:15:11  ( -79.59,  73.83)    2.63                26
 06/26/2018   03:41:51   (  79.38,  20.59) 06/26/2018   03:41:27  (  79.38,  20.53)    1.29                24
 06/26/2018   04:31:13   ( -79.59,-170.34) 06/26/2018   04:32:06  ( -79.59,-170.45)    2.26                53
 06/28/2018   19:10:16   ( -75.71, -47.17) 06/28/2018   19:09:02  ( -75.94, -48.36)   41.14                74
 06/28/2018   19:58:16   (  79.50, 137.27) 06/28/2018   19:58:18  (  79.50, 137.31)    0.80                 2
 07/01/2018   11:25:22   ( -79.37,  84.62) 07/01/2018   11:24:32  ( -79.38,  84.77)    3.12                50
 07/01/2018   12:14:44   (  79.50,-106.85) 07/01/2018   12:15:13  (  79.49,-107.00)    3.16                29
 07/04/2018   03:41:49   ( -79.37,-159.52) 07/04/2018   03:41:26  ( -79.37,-159.53)    0.26                23