Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 7.  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)
 12/08/2018   10:35:27   (  79.39, -82.79) 12/08/2018   10:34:22  (  79.39, -82.84)    1.07                65
 12/08/2018   11:24:46   ( -79.69,  86.96) 12/08/2018   11:24:58  ( -79.70,  87.09)    2.74                12
 12/11/2018   02:51:53   (  79.49,  33.79) 12/11/2018   02:51:14  (  79.49,  33.72)    1.62                39
 12/11/2018   03:41:12   ( -79.79,-156.41) 12/11/2018   03:41:50  ( -79.79,-156.29)    2.46                38
 12/13/2018   19:08:20   (  79.55, 150.08) 12/13/2018   19:08:07  (  79.55, 150.00)    1.66                13
 12/13/2018   19:57:39   ( -79.85, -40.09) 12/13/2018   19:58:43  ( -79.85, -39.96)    2.63                64
 12/16/2018   10:35:27   ( -79.38,  97.15) 12/16/2018   10:34:23  ( -79.37,  97.04)    2.41                64
 12/16/2018   11:24:46   (  79.64, -93.38) 12/16/2018   11:24:59  (  79.64, -93.44)    1.24                13
 12/19/2018   02:51:51   ( -79.51,-146.09) 12/19/2018   02:51:13  ( -79.50,-146.15)    1.50                38
 12/19/2018   03:41:11   (  79.73,  23.14) 12/19/2018   03:41:50  (  79.73,  23.12)    0.44                39
 12/21/2018   19:08:17   ( -79.59, -29.60) 12/21/2018   19:08:05  ( -79.59, -29.61)    0.18                12