Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 5 19.  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   (  79.30, -95.88) 05/22/2018   11:24:38  (  79.29, -95.99)    2.56                55
 05/22/2018   12:14:53   ( -79.57,  73.60) 05/22/2018   12:15:15  ( -79.57,  73.58)    0.29                22
 05/25/2018   03:41:56   (  79.49,  21.30) 05/25/2018   03:41:27  (  79.50,  21.44)    2.97                29
 05/25/2018   04:31:19   ( -79.65,-169.95) 05/25/2018   04:32:08  ( -79.64,-170.02)    1.53                49
 05/27/2018   19:58:21   (  79.56, 137.69) 05/27/2018   19:58:19  (  79.57, 137.81)    2.57                 2
 05/27/2018   20:46:39   ( -81.51, -31.71) 05/27/2018   20:47:53  ( -81.16, -31.18)   39.37                74
 05/30/2018   11:25:30   ( -79.30,  84.15) 05/30/2018   11:24:38  ( -79.29,  84.05)    2.17                52
 05/30/2018   12:14:47   (  79.63,-105.95) 05/30/2018   12:15:12  (  79.64,-105.83)    2.62                25
 06/02/2018   03:41:56   ( -79.37,-159.52) 06/02/2018   03:41:31  ( -79.37,-159.63)    2.15                25