Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 8 16.  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)
 08/17/2018   19:13:25   (  68.98,-110.46) 08/17/2018   19:14:34  (  68.88,-109.21)   51.40                69
 08/17/2018   20:03:56   ( -68.30,  57.77) 08/17/2018   20:04:12  ( -68.32,  57.74)    2.33                16
 08/17/2018   20:54:40   (  68.18,-134.77) 08/17/2018   20:53:40  (  68.16,-134.81)    3.29                60
 08/20/2018   11:30:11   (  68.40,   6.09) 08/20/2018   11:31:11  (  68.41,   6.09)    0.73                60
 08/20/2018   12:20:53   ( -68.30, 173.53) 08/20/2018   12:20:41  ( -68.30, 173.59)    2.50                12
 08/20/2018   13:11:27   (  67.65, -18.34) 08/20/2018   13:10:17  (  67.68, -19.48)   48.41                70
 08/23/2018   03:47:07   (  68.35, 121.92) 08/23/2018   03:47:40  (  68.38, 121.93)    2.58                33
 08/23/2018   04:37:48   ( -68.20, -70.57) 08/23/2018   04:37:11  ( -68.21, -70.63)    2.93                37
 08/25/2018   19:13:26   ( -68.79,  69.80) 08/25/2018   19:14:38  ( -68.67,  70.53)   32.37                72
 08/25/2018   20:04:03   (  68.31,-122.26) 08/25/2018   20:04:10  (  68.28,-122.30)    3.13                 7
 08/25/2018   20:54:45   ( -68.20,  45.19) 08/25/2018   20:53:40  ( -68.18,  45.21)    3.08                65
 08/28/2018   11:30:15   ( -68.42,-173.95) 08/28/2018   11:31:10  ( -68.41,-173.91)    2.16                55
 08/28/2018   12:20:58   (  68.27,  -6.44) 08/28/2018   12:20:38  (  68.24,  -6.47)    2.70                20
 08/28/2018   13:11:28   ( -67.51, 161.81) 08/28/2018   13:10:18  ( -67.58, 160.40)   60.51                70