Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 1 31.  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)
 02/02/2018   03:41:56   (  79.71,  23.08) 02/02/2018   03:41:19  (  79.72,  23.20)    2.62                37
 02/02/2018   04:31:20   ( -79.82,-168.42) 02/02/2018   04:32:01  ( -79.82,-168.57)    3.15                41
 02/04/2018   19:58:24   (  79.76, 139.34) 02/04/2018   19:58:11  (  79.76, 139.34)    0.28                13
 02/04/2018   20:47:46   ( -79.94, -51.56) 02/04/2018   20:48:50  ( -79.95, -51.54)    0.27                64
 02/07/2018   11:25:33   ( -79.56,  86.10) 02/07/2018   11:24:26  ( -79.56,  86.03)    1.33                67
 02/07/2018   12:14:53   (  79.77,-104.70) 02/07/2018   12:15:04  (  79.76,-104.82)    2.52                11
 02/10/2018   03:41:57   ( -79.71,-156.87) 02/10/2018   03:41:13  ( -79.72,-156.74)    2.83                44
 02/10/2018   04:31:17   (  79.92,  12.36) 02/10/2018   04:31:51  (  79.92,  12.46)    1.93                34
 02/12/2018   19:58:25   ( -79.76, -40.67) 02/12/2018   19:58:05  ( -79.76, -40.62)    1.03                20