Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 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)
 05/25/2018   03:41:56   (  79.47,  21.18) 05/25/2018   03:41:27  (  79.48,  21.31)    2.97                29
 05/25/2018   04:31:19   ( -79.63,-170.10) 05/25/2018   04:32:08  ( -79.63,-170.17)    1.42                49
 05/27/2018   19:58:22   (  79.55, 137.56) 05/27/2018   19:58:20  (  79.55, 137.68)    2.65                 2
 05/27/2018   20:46:38   ( -81.53, -31.14) 05/27/2018   20:47:52  ( -81.18, -30.63)   40.24                74
 05/30/2018   11:25:30   ( -79.32,  84.25) 05/30/2018   11:24:38  ( -79.31,  84.17)    1.89                52
 05/30/2018   12:14:48   (  79.61,-106.09) 05/30/2018   12:15:13  (  79.62,-105.96)    2.86                25
 06/02/2018   03:41:55   ( -79.38,-159.42) 06/02/2018   03:41:30  ( -79.38,-159.50)    1.69                25
 06/02/2018   04:31:14   (  79.64,   9.96) 06/02/2018   04:32:07  (  79.62,   9.83)    2.90                53
 06/04/2018   19:09:57   (  76.69, 135.96) 06/04/2018   19:08:44  (  76.84, 134.90)   31.87                73