Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 22.  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)
 12/24/2018   10:35:30   (  79.46, -82.34) 12/24/2018   10:34:18  (  79.46, -82.29)    0.97                72
 12/24/2018   11:24:51   ( -79.68,  86.90) 12/24/2018   11:24:57  ( -79.68,  86.87)    0.68                 6
 12/27/2018   02:52:00   (  79.45,  33.53) 12/27/2018   02:51:13  (  79.45,  33.39)    2.97                47
 12/27/2018   03:41:18   ( -79.79,-156.39) 12/27/2018   03:41:48  ( -79.79,-156.30)    1.77                30
 12/29/2018   19:08:26   (  79.60, 150.44) 12/29/2018   19:08:03  (  79.60, 150.43)    0.37                23
 12/29/2018   19:57:48   ( -79.79, -40.52) 12/29/2018   19:58:43  ( -79.78, -40.63)    2.12                55
 01/01/2019   10:36:45   ( -76.30,  82.96) 01/01/2019   10:35:31  ( -76.52,  81.86)   37.44                74
 01/01/2019   11:24:52   (  79.71, -92.92) 01/01/2019   11:24:53  (  79.71, -92.80)    2.45                 1
 01/04/2019   02:52:02   ( -79.48,-146.31) 01/04/2019   02:51:11  ( -79.47,-146.41)    2.20                51