Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 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)
 12/29/2015   17:29:45   ( -79.11,  -8.14) 12/29/2015   17:28:39  ( -79.12,  -8.02)    2.73                66
 12/29/2015   18:19:04   (  79.38, 161.23) 12/29/2015   18:19:16  (  79.38, 161.23)    0.17                12
 01/01/2016   09:46:10   ( -79.22, 108.47) 01/01/2016   09:45:29  ( -79.23, 108.56)    2.11                41
 01/01/2016   10:35:29   (  79.45, -82.40) 01/01/2016   10:36:06  (  79.45, -82.41)    0.23                37
 01/04/2016   02:02:37   ( -79.20,-135.76) 01/04/2016   02:02:22  ( -79.20,-135.89)    2.80                15
 01/04/2016   02:51:53   (  79.58,  34.40) 01/04/2016   02:52:55  (  79.59,  34.48)    1.66                62
 01/06/2016   17:29:40   (  79.08, 171.72) 01/06/2016   17:28:33  (  79.08, 171.73)    0.32                67
 01/06/2016   18:18:59   ( -79.40, -18.56) 01/06/2016   18:19:09  ( -79.41, -18.53)    0.63                10
 01/09/2016   09:46:04   (  79.19, -71.72) 01/09/2016   09:45:23  (  79.19, -71.74)    0.47                41