Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 29.  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)
 03/30/2018   03:42:07   ( -79.51,-158.53) 03/30/2018   03:41:17  ( -79.52,-158.42)    2.24                50
 03/30/2018   04:31:28   (  79.69,  10.42) 03/30/2018   04:31:56  (  79.69,  10.36)    1.27                28
 04/01/2018   19:58:36   ( -79.53, -42.50) 04/01/2018   19:58:13  ( -79.53, -42.60)    2.24                23
 04/01/2018   20:47:55   (  79.79, 126.99) 04/01/2018   20:48:49  (  79.79, 127.01)    0.39                54
 04/04/2018   11:26:14   (  78.06,-102.61) 04/04/2018   11:25:00  (  78.19,-103.09)   17.73                74
 04/04/2018   12:15:03   ( -79.62,  74.02) 04/04/2018   12:15:06  ( -79.63,  74.03)    0.35                 3
 04/07/2018   03:42:08   (  79.48,  21.22) 04/07/2018   03:41:20  (  79.47,  21.20)    0.59                48
 04/07/2018   04:31:30   ( -79.67,-169.74) 04/07/2018   04:32:00  ( -79.66,-169.89)    3.14                30
 04/09/2018   19:58:34   (  79.60, 137.94) 04/09/2018   19:58:12  (  79.61, 138.07)    2.69                22