Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 4 27.  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)
 04/28/2018   11:25:38   ( -79.35,  84.46) 04/28/2018   11:24:34  ( -79.35,  84.49)    0.79                64
 04/28/2018   12:14:57   (  79.62,-106.03) 04/28/2018   12:15:10  (  79.63,-105.96)    1.57                13
 05/01/2018   03:42:04   ( -79.41,-159.25) 05/01/2018   03:41:28  ( -79.41,-159.30)    1.04                36
 05/01/2018   04:31:23   (  79.68,  10.27) 05/01/2018   04:32:04  (  79.68,  10.27)    0.21                41
 05/03/2018   19:58:30   ( -79.47, -42.99) 05/03/2018   19:58:22  ( -79.46, -43.10)    2.30                 8
 05/03/2018   20:47:49   (  79.73, 126.54) 05/03/2018   20:48:58  (  79.73, 126.49)    1.01                69
 05/06/2018   11:25:34   (  79.33, -95.70) 05/06/2018   11:24:36  (  79.32, -95.75)    1.03                58
 05/06/2018   12:14:55   ( -79.56,  73.51) 05/06/2018   12:15:15  ( -79.55,  73.38)    2.97                20
 05/09/2018   03:41:58   (  79.41,  20.74) 05/09/2018   03:41:28  (  79.41,  20.69)    0.93                30
 05/09/2018   04:31:19   ( -79.64,-170.01) 05/09/2018   04:32:07  ( -79.63,-170.15)    3.07                48
 05/11/2018   19:58:22   (  79.53, 137.41) 05/11/2018   19:58:20  (  79.53, 137.41)    0.13                 2