Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 8.  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)
 03/11/2018   12:15:01   (  79.70,-105.30) 03/11/2018   12:14:54  (  79.69,-105.36)    1.37                 7
 03/11/2018   13:04:23   ( -79.89,  63.83) 03/11/2018   13:05:33  ( -79.89,  63.79)    0.87                70
 03/14/2018   03:42:07   ( -79.57,-158.03) 03/14/2018   03:41:09  ( -79.57,-158.03)    0.08                58
 03/14/2018   04:31:27   (  79.77,  11.14) 03/14/2018   04:31:47  (  79.77,  11.08)    1.14                20
 03/16/2018   19:58:33   ( -79.67, -41.38) 03/16/2018   19:58:02  ( -79.68, -41.32)    1.37                31
 03/16/2018   20:47:53   (  79.87, 127.81) 03/16/2018   20:48:40  (  79.87, 127.81)    0.30                47
 03/19/2018   12:15:01   ( -79.70,  74.69) 03/19/2018   12:14:58  ( -79.69,  74.56)    2.88                 3
 03/19/2018   13:03:57   (  80.67,-108.74) 03/19/2018   13:05:11  (  80.55,-108.50)   14.51                74
 03/22/2018   03:42:06   (  79.55,  21.87) 03/22/2018   03:41:13  (  79.55,  21.78)    1.71                53