Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 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)
 02/04/2018   19:58:24   (  79.75, 139.28) 02/04/2018   19:58:11  (  79.75, 139.27)    0.33                13
 02/04/2018   20:47:46   ( -79.93, -51.64) 02/04/2018   20:48:50  ( -79.94, -51.63)    0.25                64
 02/07/2018   11:25:33   ( -79.55,  86.03) 02/07/2018   11:24:26  ( -79.55,  85.95)    1.57                67
 02/07/2018   12:14:53   (  79.76,-104.75) 02/07/2018   12:15:04  (  79.76,-104.89)    2.78                11
 02/10/2018   03:41:58   ( -79.70,-156.94) 02/10/2018   03:41:14  ( -79.71,-156.83)    2.46                44
 02/10/2018   04:31:18   (  79.91,  12.30) 02/10/2018   04:31:52  (  79.91,  12.38)    1.55                34
 02/12/2018   19:58:25   ( -79.75, -40.74) 02/12/2018   19:58:05  ( -79.75, -40.72)    0.50                20
 02/12/2018   20:47:45   (  79.95, 128.50) 02/12/2018   20:48:43  (  79.95, 128.49)    0.27                58
 02/15/2018   11:25:31   (  79.58, -93.69) 02/15/2018   11:24:18  (  79.58, -93.72)    0.68                73
 02/15/2018   12:14:53   ( -79.78,  75.43) 02/15/2018   12:14:57  ( -79.78,  75.38)    1.07                 4
 02/18/2018   03:41:58   (  79.65,  22.70) 02/18/2018   03:41:09  (  79.65,  22.62)    1.82                49