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   02:52:12   ( -79.49,-146.21) 12/16/2017   02:51:11  ( -79.48,-146.27)    1.26                61
 12/16/2017   03:41:31   (  79.75,  23.33) 12/16/2017   03:41:47  (  79.75,  23.32)    0.26                16
 12/18/2017   19:08:41   ( -79.55, -29.88) 12/18/2017   19:08:02  ( -79.55, -29.94)    1.37                39
 12/18/2017   19:58:00   (  79.81, 139.68) 12/18/2017   19:58:38  (  79.81, 139.67)    0.30                38
 12/21/2017   11:25:11   ( -79.62,  86.45) 12/21/2017   11:24:54  ( -79.62,  86.38)    1.55                17
 12/21/2017   12:14:30   (  79.87,-103.98) 12/21/2017   12:15:30  (  79.87,-103.99)    0.39                60
 12/24/2017   02:52:19   (  79.49,  33.76) 12/24/2017   02:51:06  (  79.49,  33.80)    0.87                73
 12/24/2017   03:41:41   ( -79.68,-157.22) 12/24/2017   03:41:46  ( -79.68,-157.31)    1.78                 5
 12/26/2017   19:08:48   (  79.59, 150.33) 12/26/2017   19:07:57  (  79.59, 150.36)    0.65                51