Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 9.  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,-105.33) 03/11/2018   12:14:54  (  79.69,-105.41)    1.63                 7
 03/11/2018   13:04:23   ( -79.89,  63.79) 03/11/2018   13:05:33  ( -79.89,  63.74)    1.11                70
 03/14/2018   03:42:08   ( -79.57,-158.03) 03/14/2018   03:41:10  ( -79.56,-158.07)    0.98                58
 03/14/2018   04:31:28   (  79.77,  11.14) 03/14/2018   04:31:48  (  79.77,  11.04)    2.24                20
 03/16/2018   19:58:34   ( -79.64, -41.59) 03/16/2018   19:58:03  ( -79.64, -41.64)    1.03                31
 03/16/2018   20:47:55   (  79.81, 127.32) 03/16/2018   20:48:42  (  79.81, 127.19)    2.56                47
 03/19/2018   12:15:01   ( -79.72,  74.84) 03/19/2018   12:14:57  ( -79.71,  74.80)    0.76                 4
 03/19/2018   13:04:21   (  79.92,-115.96) 03/19/2018   13:05:35  (  79.91,-116.08)    2.63                74
 03/22/2018   03:42:07   (  79.55,  21.85) 03/22/2018   03:41:13  (  79.54,  21.76)    2.02                54