Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 7 4.  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)
 07/06/2018   19:11:32   (  71.69, 123.93) 07/06/2018   19:10:19  (  72.04, 121.86)   81.63                73
 07/06/2018   19:58:18   ( -79.46, -43.00) 07/06/2018   19:58:18  ( -79.46, -42.99)    0.23                 0
 07/09/2018   11:25:22   (  79.33, -95.67) 07/09/2018   11:24:30  (  79.34, -95.54)    2.83                52
 07/09/2018   12:14:43   ( -79.57,  73.64) 07/09/2018   12:15:08  ( -79.58,  73.77)    2.70                25
 07/12/2018   03:41:51   (  79.32,  20.16) 07/12/2018   03:41:25  (  79.32,  20.10)    1.19                26
 07/12/2018   04:31:11   ( -79.61,-170.25) 07/12/2018   04:32:02  ( -79.60,-170.29)    1.04                51
 07/14/2018   19:58:16   (  79.46, 137.00) 07/14/2018   19:58:15  (  79.47, 137.07)    1.42                 1
 07/14/2018   20:46:04   ( -81.81, -20.28) 07/14/2018   20:47:17  ( -81.31, -19.82)   56.59                73
 07/17/2018   11:25:25   ( -79.24,  83.76) 07/17/2018   11:24:32  ( -79.24,  83.74)    0.50                53