Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 10 8.  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   19:08:22   (  79.59, 150.23) 10/10/2018   19:08:09  (  79.59, 150.36)    2.54                13
 10/10/2018   19:57:43   ( -79.82, -40.41) 10/10/2018   19:58:47  ( -79.82, -40.29)    2.39                64
 10/13/2018   10:35:30   ( -79.38,  97.05) 10/13/2018   10:34:26  ( -79.38,  97.08)    0.52                64
 10/13/2018   11:24:49   (  79.63, -93.57) 10/13/2018   11:25:03  (  79.63, -93.55)    0.25                14
 10/16/2018   02:51:57   ( -79.43,-146.77) 10/16/2018   02:51:20  ( -79.42,-146.82)    1.01                37
 10/16/2018   03:41:15   (  79.71,  22.88) 10/16/2018   03:41:56  (  79.70,  22.84)    0.94                41
 10/18/2018   19:08:22   ( -79.54, -30.10) 10/18/2018   19:08:12  ( -79.54, -30.15)    1.24                10
 10/18/2018   19:57:41   (  79.78, 139.30) 10/18/2018   19:58:49  (  79.78, 139.27)    0.87                68
 10/21/2018   10:35:25   (  79.40, -82.81) 10/21/2018   10:34:25  (  79.40, -82.77)    0.88                60