Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 14.  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)
 12/16/2017   02:52:11   ( -79.50,-146.12) 12/16/2017   02:51:10  ( -79.50,-146.17)    1.12                61
 12/16/2017   03:41:31   (  79.73,  23.15) 12/16/2017   03:41:47  (  79.73,  23.15)    0.23                16
 12/18/2017   19:08:41   ( -79.57, -29.79) 12/18/2017   19:08:02  ( -79.56, -29.84)    1.08                39
 12/18/2017   19:58:00   (  79.82, 139.78) 12/18/2017   19:58:38  (  79.82, 139.78)    0.30                38
 12/21/2017   11:25:11   ( -79.63,  86.54) 12/21/2017   11:24:54  ( -79.63,  86.49)    1.13                17
 12/21/2017   12:14:30   (  79.88,-103.88) 12/21/2017   12:15:30  (  79.88,-103.87)    0.27                60
 12/24/2017   02:52:19   (  79.50,  33.85) 12/24/2017   02:51:06  (  79.50,  33.91)    1.35                73
 12/24/2017   03:41:41   ( -79.69,-157.13) 12/24/2017   03:41:46  ( -79.69,-157.19)    1.26                 5
 12/26/2017   19:08:47   (  79.60, 150.42) 12/26/2017   19:07:56  (  79.60, 150.48)    1.22                51