Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 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)
 02/17/2018   10:39:09   (  68.97,  18.03) 02/17/2018   10:40:19  (  68.85,  19.33)   53.45                70
 02/17/2018   11:29:39   ( -68.31,-173.77) 02/17/2018   11:29:56  ( -68.31,-173.72)    2.57                17
 02/17/2018   12:20:22   (  68.12,  -6.22) 02/17/2018   12:19:24  (  68.13,  -6.28)    2.54                58
 02/20/2018   02:55:50   (  68.38, 134.60) 02/20/2018   02:56:55  (  68.39, 134.64)    1.91                65
 02/20/2018   03:46:31   ( -68.26, -57.92) 02/20/2018   03:46:26  ( -68.24, -57.92)    2.05                 5
 02/20/2018   04:37:09   (  67.80, 109.96) 02/20/2018   04:35:57  (  67.89, 109.32)   28.88                72
 02/22/2018   19:12:42   (  68.33,-109.55) 02/22/2018   19:13:25  (  68.31,-109.58)    2.35                43
 02/22/2018   20:03:23   ( -68.20,  57.93) 02/22/2018   20:02:55  ( -68.21,  57.94)    1.62                28
 02/25/2018   10:39:06   ( -69.26,-162.33) 02/25/2018   10:40:13  ( -69.18,-160.27)   82.20                67
 02/25/2018   11:29:34   (  68.28,   6.29) 02/25/2018   11:29:54  (  68.27,   6.26)    1.53                20
 02/25/2018   12:20:16   ( -68.20, 173.71) 02/25/2018   12:19:24  ( -68.18, 173.78)    3.45                52
 02/28/2018   02:55:43   ( -68.41, -45.40) 02/28/2018   02:56:55  ( -68.41, -45.34)    2.55                72
 02/28/2018   03:46:25   (  68.23, 122.13) 02/28/2018   03:46:22  (  68.23, 122.08)    2.10                 3
 02/28/2018   04:37:06   ( -68.09, -70.38) 02/28/2018   04:35:53  ( -68.08, -70.46)    3.71                73