Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 5 12.  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)
 05/14/2017   03:41:29   ( -79.47,-158.85) 05/14/2017   03:41:21  ( -79.48,-158.72)    2.73                 8
 05/14/2017   04:30:50   (  79.66,  10.16) 05/14/2017   04:32:00  (  79.66,  10.13)    0.70                70
 05/16/2017   19:08:38   (  79.21, 147.68) 05/16/2017   19:07:39  (  79.21, 147.64)    0.65                59
 05/16/2017   19:57:57   ( -79.52, -42.63) 05/16/2017   19:58:15  ( -79.53, -42.56)    1.60                18
 05/19/2017   11:25:05   (  79.29, -95.92) 05/19/2017   11:24:32  (  79.29, -95.97)    0.98                33
 05/19/2017   12:14:24   ( -79.60,  73.81) 05/19/2017   12:15:08  ( -79.60,  73.87)    1.06                44
 05/22/2017   03:41:30   (  79.41,  20.71) 05/22/2017   03:41:23  (  79.40,  20.68)    0.70                 7
 05/22/2017   04:30:50   ( -79.68,-169.76) 05/22/2017   04:32:00  ( -79.68,-169.71)    1.12                70
 05/24/2017   19:08:36   ( -79.29, -31.82) 05/24/2017   19:07:37  ( -79.30, -31.70)    2.55                59