Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 7 10.  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)
 07/11/2018   11:30:00   ( -69.07,-174.76) 07/11/2018   11:31:09  ( -68.99,-173.21)   62.69                69
 07/11/2018   12:20:32   (  68.30,  -6.42) 07/11/2018   12:20:46  (  68.31,  -6.40)    2.20                14
 07/11/2018   13:11:13   ( -68.17, 161.06) 07/11/2018   13:10:17  ( -68.16, 161.05)    1.38                56
 07/14/2018   03:46:42   ( -68.40, -58.09) 07/14/2018   03:47:49  ( -68.40, -58.06)    1.02                67
 07/14/2018   04:37:26   (  68.27, 109.39) 07/14/2018   04:37:16  (  68.28, 109.44)    2.20                10
 07/14/2018   05:28:03   ( -67.93, -82.85) 07/14/2018   05:26:50  ( -67.96, -83.31)   19.27                73
 07/16/2018   20:03:36   ( -68.37,  57.73) 07/16/2018   20:04:19  ( -68.37,  57.78)    2.10                43
 07/16/2018   20:54:18   (  68.19,-134.73) 07/16/2018   20:53:46  (  68.19,-134.79)    2.37                32
 07/19/2018   11:30:00   (  69.13,   5.17) 07/19/2018   11:31:08  (  69.00,   6.81)   66.31                68
 07/19/2018   12:20:28   ( -68.29, 173.61) 07/19/2018   12:20:49  ( -68.29, 173.56)    2.05                21
 07/19/2018   13:11:12   (  68.17, -18.92) 07/19/2018   13:10:16  (  68.17, -18.94)    0.79                56
 07/22/2018   03:46:41   (  68.41, 121.92) 07/22/2018   03:47:48  (  68.43, 121.97)    3.07                67
 07/22/2018   04:37:22   ( -68.26, -70.58) 07/22/2018   04:37:19  ( -68.28, -70.58)    1.48                 3
 07/22/2018   05:28:02   (  67.93,  97.15) 07/22/2018   05:26:49  (  67.99,  96.72)   19.20                73