Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 10 22.  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)
 10/23/2017   19:08:16   (  79.62, 150.52) 10/23/2017   19:08:15  (  79.61, 150.53)    0.25                 1
 10/23/2017   19:56:16   ( -81.74, -11.28) 10/23/2017   19:57:30  ( -81.32, -11.04)   47.15                74
 10/26/2017   10:35:23   ( -79.46,  97.69) 10/26/2017   10:34:30  ( -79.47,  97.76)    1.61                53
 10/26/2017   11:24:42   (  79.71, -92.90) 10/26/2017   11:25:07  (  79.71, -92.86)    0.86                25
 10/29/2017   02:51:47   ( -79.59,-145.51) 10/29/2017   02:51:20  ( -79.60,-145.38)    2.86                27
 10/29/2017   03:41:07   (  79.80,  23.65) 10/29/2017   03:41:58  (  79.80,  23.75)    2.17                51
 10/31/2017   18:21:49   (  70.81, 134.91) 10/31/2017   18:20:37  (  71.13, 132.65)   89.68                72
 10/31/2017   19:08:15   ( -79.61, -29.54) 10/31/2017   19:08:15  ( -79.60, -29.62)    1.65                 0
 11/03/2017   10:35:19   (  79.48, -82.21) 11/03/2017   10:34:28  (  79.48, -82.17)    0.77                51