Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 16.  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)
 12/18/2017   19:08:41   ( -79.57, -29.74) 12/18/2017   19:08:02  ( -79.57, -29.74)    0.13                39
 12/18/2017   19:58:00   (  79.83, 139.84) 12/18/2017   19:58:38  (  79.83, 139.90)    1.13                38
 12/21/2017   11:25:09   ( -79.66,  86.80) 12/21/2017   11:24:52  ( -79.67,  86.87)    1.48                17
 12/21/2017   12:14:28   (  79.92,-103.60) 12/21/2017   12:15:28  (  79.92,-103.46)    2.70                60
 12/24/2017   02:52:18   (  79.49,  33.77) 12/24/2017   02:51:06  (  79.48,  33.76)    0.31                72
 12/24/2017   03:41:40   ( -79.68,-157.22) 12/24/2017   03:41:46  ( -79.67,-157.36)    2.87                 6
 12/26/2017   19:08:46   (  79.61, 150.49) 12/26/2017   19:07:56  (  79.61, 150.61)    2.39                50
 12/26/2017   19:58:08   ( -79.80, -40.46) 12/26/2017   19:58:36  ( -79.79, -40.47)    0.26                28
 12/29/2017   11:25:17   (  79.61, -93.61) 12/29/2017   11:24:50  (  79.61, -93.65)    0.76                27