Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 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)
 05/22/2018   11:25:33   (  79.27, -96.03) 05/22/2018   11:24:38  (  79.27, -96.15)    2.59                55
 05/22/2018   12:14:52   ( -79.58,  73.69) 05/22/2018   12:15:14  ( -79.58,  73.68)    0.16                22
 05/25/2018   03:41:56   (  79.47,  21.15) 05/25/2018   03:41:27  (  79.48,  21.28)    3.02                29
 05/25/2018   04:31:19   ( -79.62,-170.13) 05/25/2018   04:32:08  ( -79.62,-170.20)    1.43                49
 05/27/2018   19:58:22   (  79.54, 137.53) 05/27/2018   19:58:20  (  79.55, 137.66)    2.78                 2
 05/27/2018   20:46:38   ( -81.53, -31.17) 05/27/2018   20:47:52  ( -81.18, -30.65)   40.21                74
 05/30/2018   11:25:30   ( -79.32,  84.24) 05/30/2018   11:24:38  ( -79.31,  84.17)    1.71                52
 05/30/2018   12:14:47   (  79.65,-105.84) 05/30/2018   12:15:12  (  79.65,-105.69)    3.09                25
 06/02/2018   03:41:55   ( -79.38,-159.43) 06/02/2018   03:41:30  ( -79.38,-159.49)    1.39                25
 06/02/2018   04:31:14   (  79.63,   9.95) 06/02/2018   04:32:07  (  79.63,   9.84)    2.53                53
 06/04/2018   19:09:54   (  76.83, 136.46) 06/04/2018   19:08:41  (  76.97, 135.44)   30.26                73