Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 7 3.  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)
 07/06/2018   03:46:45   (  68.39, 121.91) 07/06/2018   03:47:47  (  68.38, 121.93)    1.52                62
 07/06/2018   04:37:26   ( -68.27, -70.61) 07/06/2018   04:37:17  ( -68.28, -70.56)    2.71                 9
 07/06/2018   05:28:02   (  67.69,  97.41) 07/06/2018   05:26:51  (  67.77,  96.49)   39.51                71
 07/08/2018   20:03:39   (  68.36,-122.28) 07/08/2018   20:04:17  (  68.35,-122.23)    2.31                38
 07/08/2018   20:54:19   ( -68.18,  45.28) 07/08/2018   20:53:48  ( -68.19,  45.22)    2.96                31
 07/11/2018   11:30:01   ( -69.10,-174.80) 07/11/2018   11:31:10  ( -68.99,-173.20)   64.78                69
 07/11/2018   12:20:32   (  68.28,  -6.39) 07/11/2018   12:20:48  (  68.26,  -6.46)    3.31                16
 07/11/2018   13:11:13   ( -68.14, 161.09) 07/11/2018   13:10:18  ( -68.16, 161.06)    2.50                55
 07/14/2018   03:46:41   ( -68.37, -58.05) 07/14/2018   03:47:49  ( -68.41, -58.05)    3.57                68
 07/14/2018   04:37:25   (  68.25, 109.42) 07/14/2018   04:37:17  (  68.23, 109.38)    2.70                 8
 07/14/2018   05:28:02   ( -67.90, -82.82) 07/14/2018   05:26:50  ( -67.97, -83.30)   21.21                72
 07/16/2018   20:03:35   ( -68.35,  57.76) 07/16/2018   20:04:20  ( -68.32,  57.72)    2.91                45
 07/16/2018   20:54:19   (  68.22,-134.77) 07/16/2018   20:53:47  (  68.20,-134.78)    2.69                32