Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 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)
 12/08/2015   09:46:06   (  79.18, -71.83) 12/08/2015   09:45:45  (  79.18, -71.83)    0.17                21
 12/08/2015   10:35:24   ( -79.53,  98.15) 12/08/2015   10:36:20  ( -79.54,  98.29)    3.05                56
 12/11/2015   01:13:14   ( -78.92,-125.17) 12/11/2015   01:12:02  ( -78.91,-125.20)    0.72                72
 12/11/2015   02:02:30   (  79.30,  44.86) 12/11/2015   02:02:35  (  79.31,  44.92)    1.49                 5
 12/13/2015   17:29:35   ( -79.15,  -7.86) 12/13/2015   17:28:49  ( -79.16,  -7.75)    2.26                46
 12/13/2015   18:18:55   (  79.38, 161.22) 12/13/2015   18:19:27  (  79.37, 161.15)    1.48                32
 12/16/2015   09:45:59   ( -79.21, 108.41) 12/16/2015   09:45:40  ( -79.22, 108.44)    0.81                19
 12/16/2015   10:35:19   (  79.43, -82.51) 12/16/2015   10:36:18  (  79.43, -82.63)    2.57                59
 12/19/2015   01:13:04   (  78.96,  55.14) 12/19/2015   01:11:55  (  78.96,  55.11)    0.73                69