Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 5.  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)
 12/08/2017   02:52:05   (  79.51,  33.94) 12/08/2017   02:51:13  (  79.50,  33.88)    1.37                52
 12/08/2017   03:41:25   ( -79.77,-156.49) 12/08/2017   03:41:50  ( -79.78,-156.39)    2.11                25
 12/10/2017   19:08:32   (  79.60, 150.49) 12/10/2017   19:08:03  (  79.61, 150.52)    0.67                29
 12/10/2017   19:57:54   ( -79.79, -40.46) 12/10/2017   19:58:43  ( -79.79, -40.56)    2.11                49
 12/13/2017   11:25:02   (  79.62, -93.52) 12/13/2017   11:24:57  (  79.61, -93.67)    3.03                 5
 12/13/2017   12:14:22   ( -79.88,  76.10) 12/13/2017   12:15:34  ( -79.88,  76.13)    0.80                72
 12/16/2017   02:52:10   ( -79.48,-146.25) 12/16/2017   02:51:11  ( -79.48,-146.30)    1.05                59
 12/16/2017   03:41:29   (  79.74,  23.24) 12/16/2017   03:41:47  (  79.74,  23.25)    0.46                18
 12/18/2017   19:08:36   ( -79.64, -29.28) 12/18/2017   19:08:00  ( -79.65, -29.13)    3.02                36