Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 7 28.  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)
 07/30/2018   03:46:50   ( -68.40, -58.10) 07/30/2018   03:47:46  ( -68.39, -58.05)    1.94                56
 07/30/2018   04:37:33   (  68.21, 109.45) 07/30/2018   04:37:14  (  68.23, 109.40)    2.67                19
 07/30/2018   05:28:04   ( -67.54, -82.40) 07/30/2018   05:26:54  ( -67.56, -83.74)   57.21                70
 08/01/2018   19:13:23   (  69.43,-111.07) 08/01/2018   19:14:29  (  69.37,-108.57)   98.05                66
 08/01/2018   20:03:46   ( -68.33,  57.75) 08/01/2018   20:04:16  ( -68.31,  57.73)    2.33                30
 08/01/2018   20:54:30   (  68.21,-134.78) 08/01/2018   20:53:43  (  68.20,-134.75)    1.12                47
 08/04/2018   11:30:03   (  68.52,   5.96) 08/04/2018   11:31:13  (  68.50,   6.21)   10.61                70
 08/04/2018   12:20:42   ( -68.27, 173.60) 08/04/2018   12:20:45  ( -68.28, 173.58)    2.03                 3
 08/04/2018   13:11:25   (  68.09, -18.87) 08/04/2018   13:10:13  (  68.11, -18.97)    5.12                72
 08/07/2018   03:46:56   (  68.35, 121.94) 08/07/2018   03:47:43  (  68.35, 121.91)    1.00                47
 08/07/2018   04:37:38   ( -68.26, -70.62) 08/07/2018   04:37:13  ( -68.25, -70.58)    1.92                25
 08/07/2018   05:28:03   (  67.11,  98.09) 08/07/2018   05:26:57  (  67.18,  95.85)   96.94                66
 08/09/2018   19:13:24   ( -69.26,  69.17) 08/09/2018   19:14:32  ( -69.15,  71.15)   78.99                68
 08/09/2018   20:03:52   (  68.30,-122.22) 08/09/2018   20:04:12  (  68.31,-122.25)    2.19                20
 08/09/2018   20:54:34   ( -68.20,  45.22) 08/09/2018   20:53:42  ( -68.21,  45.26)    2.11                52