Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 11.  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)
 12/13/2018   19:08:20   (  79.55, 150.11) 12/13/2018   19:08:07  (  79.55, 150.03)    1.83                13
 12/13/2018   19:57:39   ( -79.85, -40.08) 12/13/2018   19:58:43  ( -79.85, -39.95)    2.51                64
 12/16/2018   10:35:27   ( -79.38,  97.17) 12/16/2018   10:34:23  ( -79.37,  97.04)    2.85                64
 12/16/2018   11:24:46   (  79.65, -93.34) 12/16/2018   11:24:59  (  79.64, -93.43)    1.71                13
 12/19/2018   02:51:52   ( -79.47,-146.33) 12/19/2018   02:51:14  ( -79.47,-146.44)    2.39                38
 12/19/2018   03:41:11   (  79.73,  23.18) 12/19/2018   03:41:50  (  79.73,  23.12)    1.27                39
 12/21/2018   19:08:18   ( -79.56, -29.84) 12/21/2018   19:08:06  ( -79.56, -29.92)    1.66                12
 12/21/2018   19:57:37   (  79.81, 139.69) 12/21/2018   19:58:42  (  79.81, 139.66)    0.51                65
 12/24/2018   10:35:22   (  79.45, -82.38) 12/24/2018   10:34:18  (  79.45, -82.33)    1.24                64