Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 28.  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)
 12/29/2018   19:08:26   (  79.58, 150.31) 12/29/2018   19:08:03  (  79.58, 150.31)    0.05                23
 12/29/2018   19:57:48   ( -79.76, -40.70) 12/29/2018   19:58:43  ( -79.76, -40.80)    2.03                55
 01/01/2019   10:36:42   ( -76.46,  83.50) 01/01/2019   10:35:28  ( -76.67,  82.45)   35.42                74
 01/01/2019   11:24:52   (  79.72, -92.79) 01/01/2019   11:24:53  (  79.73, -92.63)    3.15                 1
 01/04/2019   02:52:02   ( -79.49,-146.23) 01/04/2019   02:51:11  ( -79.48,-146.28)    1.18                51
 01/04/2019   03:41:21   (  79.75,  23.28) 01/04/2019   03:41:47  (  79.75,  23.29)    0.26                26
 01/06/2019   19:08:27   ( -79.63, -29.37) 01/06/2019   19:08:00  ( -79.63, -29.26)    2.25                27
 01/06/2019   19:57:49   (  79.77, 139.33) 01/06/2019   19:58:40  (  79.76, 139.21)    2.53                51
 01/09/2019   11:24:56   ( -79.65,  86.67) 01/09/2019   11:24:54  ( -79.65,  86.64)    0.50                 2