Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 6.  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   10:35:28   (  79.39, -82.82) 12/08/2018   10:34:23  (  79.38, -82.88)    1.24                65
 12/08/2018   11:24:47   ( -79.69,  86.94) 12/08/2018   11:24:59  ( -79.70,  87.06)    2.56                12
 12/11/2018   02:51:54   (  79.45,  33.50) 12/11/2018   02:51:15  (  79.45,  33.41)    2.03                39
 12/11/2018   03:41:12   ( -79.79,-156.42) 12/11/2018   03:41:50  ( -79.79,-156.32)    2.04                38
 12/13/2018   19:08:20   (  79.55, 150.08) 12/13/2018   19:08:07  (  79.54, 149.96)    2.42                13
 12/13/2018   19:57:39   ( -79.85, -40.08) 12/13/2018   19:58:43  ( -79.85, -39.99)    1.85                64
 12/16/2018   10:35:25   ( -79.46,  97.70) 12/16/2018   10:34:20  ( -79.47,  97.82)    2.75                65
 12/16/2018   11:24:46   (  79.65, -93.36) 12/16/2018   11:24:59  (  79.64, -93.47)    2.44                13
 12/19/2018   02:51:50   ( -79.59,-145.50) 12/19/2018   02:51:11  ( -79.60,-145.35)    3.15                39