Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 3.  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)
 12/05/2017   10:36:47   (  76.33, -96.93) 12/05/2017   10:35:34  (  76.51, -98.13)   37.37                73
 12/05/2017   11:24:57   ( -79.68,  86.89) 12/05/2017   11:24:59  ( -79.68,  86.91)    0.51                 2
 12/08/2017   02:52:06   (  79.47,  33.66) 12/08/2017   02:51:14  (  79.47,  33.58)    1.62                52
 12/08/2017   03:41:25   ( -79.77,-156.49) 12/08/2017   03:41:50  ( -79.78,-156.40)    1.83                25
 12/10/2017   19:08:33   (  79.60, 150.48) 12/10/2017   19:08:04  (  79.60, 150.50)    0.26                29
 12/10/2017   19:57:54   ( -79.80, -40.45) 12/10/2017   19:58:43  ( -79.79, -40.57)    2.54                49
 12/13/2017   11:24:59   (  79.73, -92.71) 12/13/2017   11:24:53  (  79.74, -92.57)    2.82                 6
 12/13/2017   12:14:22   ( -79.88,  76.11) 12/13/2017   12:15:34  ( -79.88,  76.12)    0.22                72
 12/16/2017   02:52:10   ( -79.49,-146.23) 12/16/2017   02:51:11  ( -79.48,-146.31)    1.76                59