Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 6 30.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/30/2018   20:03:39   ( -68.35,  57.73) 06/30/2018   20:04:18  ( -68.34,  57.76)    1.47                39
 06/30/2018   20:54:23   (  68.20,-134.78) 06/30/2018   20:53:45  (  68.22,-134.74)    2.43                38
 07/03/2018   11:30:01   (  68.91,   5.43) 07/03/2018   11:31:11  (  68.79,   6.56)   47.36                70
 07/03/2018   12:20:33   ( -68.31, 173.56) 07/03/2018   12:20:48  ( -68.30, 173.59)    1.75                15
 07/03/2018   13:11:16   (  68.17, -18.96) 07/03/2018   13:10:14  (  68.18, -18.91)    2.29                62
 07/06/2018   03:46:44   (  68.35, 121.96) 07/06/2018   03:47:47  (  68.35, 121.89)    2.81                63
 07/06/2018   04:37:26   ( -68.27, -70.62) 07/06/2018   04:37:17  ( -68.25, -70.59)    2.68                 9
 07/06/2018   05:28:02   (  67.71,  97.39) 07/06/2018   05:26:51  (  67.73,  96.46)   39.69                71
 07/08/2018   20:03:38   (  68.32,-122.22) 07/08/2018   20:04:16  (  68.35,-122.23)    3.16                38
 07/08/2018   20:54:19   ( -68.18,  45.27) 07/08/2018   20:53:47  ( -68.20,  45.23)    2.10                32
 07/11/2018   11:30:00   ( -69.06,-174.74) 07/11/2018   11:31:09  ( -68.96,-173.23)   61.10                69
 07/11/2018   12:20:32   (  68.29,  -6.41) 07/11/2018   12:20:46  (  68.28,  -6.43)    1.09                14
 07/11/2018   13:11:13   ( -68.15, 161.08) 07/11/2018   13:10:17  ( -68.13, 161.03)    2.92                56