Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 12 15.  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   ( -79.48,-146.25) 12/16/2017   02:51:11  ( -79.48,-146.29)    0.86                61
 12/16/2017   03:41:31   (  79.75,  23.30) 12/16/2017   03:41:47  (  79.75,  23.31)    0.21                16
 12/18/2017   19:08:40   ( -79.58, -29.68) 12/18/2017   19:08:01  ( -79.58, -29.68)    0.02                39
 12/18/2017   19:57:59   (  79.84, 139.89) 12/18/2017   19:58:37  (  79.84, 139.95)    1.18                38
 12/21/2017   11:25:09   ( -79.67,  86.86) 12/21/2017   11:24:52  ( -79.68,  86.93)    1.45                17
 12/21/2017   12:14:29   (  79.89,-103.83) 12/21/2017   12:15:29  (  79.90,-103.70)    2.70                60
 12/24/2017   02:52:18   (  79.49,  33.82) 12/24/2017   02:51:06  (  79.49,  33.81)    0.44                72
 12/24/2017   03:41:40   ( -79.69,-157.17) 12/24/2017   03:41:46  ( -79.68,-157.31)    2.95                 6
 12/26/2017   19:08:46   (  79.61, 150.55) 12/26/2017   19:07:56  (  79.62, 150.66)    2.24                50
 12/26/2017   19:58:08   ( -79.80, -40.40) 12/26/2017   19:58:36  ( -79.80, -40.42)    0.48                28
 12/29/2017   11:25:16   (  79.62, -93.56) 12/29/2017   11:24:49  (  79.62, -93.60)    0.98                27