Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 7.  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   (  79.52,  33.99) 12/08/2017   02:51:13  (  79.51,  33.95)    1.03                52
 12/08/2017   03:41:24   ( -79.82,-156.17) 12/08/2017   03:41:49  ( -79.82,-156.02)    3.03                25
 12/10/2017   19:08:31   (  79.65, 150.81) 12/10/2017   19:08:02  (  79.66, 150.94)    2.65                29
 12/10/2017   19:57:53   ( -79.84, -40.13) 12/10/2017   19:58:42  ( -79.84, -40.11)    0.46                49
 12/13/2017   11:25:00   (  79.70, -92.93) 12/13/2017   11:24:55  (  79.71, -92.86)    1.59                 5
 12/13/2017   12:14:22   ( -79.89,  76.14) 12/13/2017   12:15:35  ( -79.89,  76.12)    0.53                73
 12/16/2017   02:52:08   ( -79.56,-145.67) 12/16/2017   02:51:10  ( -79.57,-145.62)    1.12                58
 12/16/2017   03:41:28   (  79.78,  23.57) 12/16/2017   03:41:47  (  79.79,  23.67)    2.16                19
 12/18/2017   19:08:38   ( -79.57, -29.76) 12/18/2017   19:08:05  ( -79.56, -29.91)    3.14                33