Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 10 10.  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)
 10/10/2018   19:08:25   (  79.50, 149.59) 10/10/2018   19:08:12  (  79.50, 149.61)    0.50                13
 10/10/2018   19:57:45   ( -79.77, -40.82) 10/10/2018   19:58:49  ( -79.77, -40.78)    0.81                64
 10/13/2018   10:35:30   ( -79.40,  97.19) 10/13/2018   10:34:25  ( -79.41,  97.33)    3.02                65
 10/13/2018   11:24:50   (  79.62, -93.68) 10/13/2018   11:25:03  (  79.63, -93.58)    2.17                13
 10/16/2018   02:51:57   ( -79.41,-146.88) 10/16/2018   02:51:19  ( -79.40,-146.95)    1.52                38
 10/16/2018   03:41:16   (  79.66,  22.50) 10/16/2018   03:41:56  (  79.65,  22.41)    2.10                40
 10/18/2018   19:08:22   ( -79.53, -30.21) 10/18/2018   19:08:10  ( -79.53, -30.17)    0.83                12
 10/18/2018   19:57:41   (  79.77, 139.20) 10/18/2018   19:58:47  (  79.77, 139.23)    0.53                66
 10/21/2018   10:35:28   (  79.31, -83.41) 10/21/2018   10:34:26  (  79.30, -83.51)    2.16                62
 10/21/2018   11:24:49   ( -79.56,  85.93) 10/21/2018   11:25:04  ( -79.55,  85.80)    2.73                15
 10/24/2018   02:51:52   (  79.46,  33.44) 10/24/2018   02:51:16  (  79.46,  33.50)    1.16                36