Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 12 10.  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)
 12/10/2016   10:35:15   ( -79.48,  97.80) 12/10/2016   10:34:32  ( -79.49,  97.94)    3.08                43
 12/10/2016   11:24:35   (  79.66, -93.24) 12/10/2016   11:25:10  (  79.66, -93.31)    1.49                35
 12/13/2016   02:51:42   ( -79.51,-146.10) 12/13/2016   02:51:25  ( -79.51,-146.11)    0.32                17
 12/13/2016   03:41:00   (  79.80,  23.68) 12/13/2016   03:42:00  (  79.80,  23.77)    1.81                60
 12/15/2016   18:18:47   (  79.37, 161.22) 12/15/2016   18:17:38  (  79.37, 161.24)    0.49                69
 12/15/2016   19:08:09   ( -79.57, -29.78) 12/15/2016   19:08:18  ( -79.56, -29.90)    2.64                 9
 12/18/2016   10:35:14   (  79.42, -82.54) 12/18/2016   10:34:31  (  79.42, -82.58)    0.91                43
 12/18/2016   11:24:33   ( -79.73,  87.30) 12/18/2016   11:25:07  ( -79.74,  87.41)    2.25                34
 12/21/2016   02:51:40   (  79.51,  33.92) 12/21/2016   02:51:23  (  79.50,  33.86)    1.36                17
 12/21/2016   03:40:58   ( -79.81,-156.20) 12/21/2016   03:41:58  ( -79.81,-156.11)    1.71                60
 12/23/2016   18:18:43   ( -79.44, -18.28) 12/23/2016   18:17:34  ( -79.45, -18.14)    2.83                69