Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 8 12.  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)
 08/15/2018   03:47:00   ( -68.34, -58.05) 08/15/2018   03:47:43  ( -68.35, -58.10)    2.07                43
 08/15/2018   04:37:44   (  68.22, 109.41) 08/15/2018   04:37:10  (  68.24, 109.42)    2.02                34
 08/17/2018   19:13:25   (  68.97,-110.45) 08/17/2018   19:14:35  (  68.85,-109.24)   50.34                70
 08/17/2018   20:03:57   ( -68.34,  57.71) 08/17/2018   20:04:12  ( -68.34,  57.78)    2.60                15
 08/17/2018   20:54:40   (  68.17,-134.76) 08/17/2018   20:53:40  (  68.18,-134.77)    1.21                60
 08/20/2018   11:30:11   (  68.39,   6.10) 08/20/2018   11:31:12  (  68.41,   6.10)    2.26                61
 08/20/2018   12:20:53   ( -68.29, 173.55) 08/20/2018   12:20:42  ( -68.30, 173.60)    2.68                11
 08/20/2018   13:11:28   (  67.69, -18.39) 08/20/2018   13:10:17  (  67.74, -19.41)   43.05                71
 08/23/2018   03:47:07   (  68.34, 121.93) 08/23/2018   03:47:43  (  68.32, 121.87)    3.52                36
 08/23/2018   04:37:49   ( -68.24, -70.62) 08/23/2018   04:37:13  ( -68.22, -70.62)    2.60                36
 08/25/2018   19:13:28   ( -68.94,  69.60) 08/25/2018   19:14:38  ( -68.80,  70.69)   46.38                70
 08/25/2018   20:04:02   (  68.30,-122.25) 08/25/2018   20:04:12  (  68.30,-122.28)    1.33                10
 08/25/2018   20:54:44   ( -68.19,  45.21) 08/25/2018   20:53:42  ( -68.20,  45.23)    1.19                62