Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 18.  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)
 05/19/2018   19:58:26   ( -79.53, -42.57) 05/19/2018   19:58:21  ( -79.53, -42.50)    1.56                 5
 05/19/2018   20:47:47   (  79.72, 126.43) 05/19/2018   20:49:00  (  79.71, 126.34)    1.91                73
 05/22/2018   11:25:34   (  79.27, -96.09) 05/22/2018   11:24:39  (  79.26, -96.22)    2.81                55
 05/22/2018   12:14:53   ( -79.58,  73.65) 05/22/2018   12:15:15  ( -79.58,  73.63)    0.47                22
 05/25/2018   03:41:56   (  79.46,  21.09) 05/25/2018   03:41:27  (  79.47,  21.20)    2.38                29
 05/25/2018   04:31:19   ( -79.62,-170.16) 05/25/2018   04:32:08  ( -79.61,-170.26)    2.15                49
 05/27/2018   19:58:22   (  79.54, 137.49) 05/27/2018   19:58:20  (  79.54, 137.56)    1.49                 2
 05/27/2018   20:46:47   ( -81.37, -34.72) 05/27/2018   20:48:01  ( -81.07, -34.15)   34.71                74
 05/30/2018   11:25:28   ( -79.39,  84.74) 05/30/2018   11:24:35  ( -79.40,  84.86)    2.54                53