Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 17.  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   (  68.98,  18.02) 02/17/2018   10:40:18  (  68.91,  19.39)   55.24                69
 02/17/2018   11:29:40   ( -68.32,-173.78) 02/17/2018   11:29:57  ( -68.30,-173.73)    3.43                17
 02/17/2018   12:20:23   (  68.13,  -6.23) 02/17/2018   12:19:25  (  68.13,  -6.28)    2.12                58
 02/20/2018   02:55:50   (  68.39, 134.59) 02/20/2018   02:56:55  (  68.40, 134.64)    2.53                65
 02/20/2018   03:46:31   ( -68.26, -57.93) 02/20/2018   03:46:26  ( -68.24, -57.92)    2.46                 5
 02/20/2018   04:37:09   (  67.80, 109.96) 02/20/2018   04:35:57  (  67.90, 109.33)   28.43                72
 02/22/2018   19:12:42   (  68.33,-109.56) 02/22/2018   19:13:25  (  68.33,-109.56)    0.21                43
 02/22/2018   20:03:23   ( -68.21,  57.92) 02/22/2018   20:02:56  ( -68.18,  57.89)    3.26                27
 02/25/2018   10:39:06   ( -69.27,-162.35) 02/25/2018   10:40:14  ( -69.16,-160.29)   82.03                68
 02/25/2018   11:29:34   (  68.28,   6.28) 02/25/2018   11:29:55  (  68.27,   6.24)    2.55                21
 02/25/2018   12:20:15   ( -68.15, 173.77) 02/25/2018   12:19:25  ( -68.17, 173.76)    1.98                50
 02/28/2018   02:55:44   ( -68.47, -45.48) 02/28/2018   02:56:56  ( -68.43, -45.33)    7.49                72
 02/28/2018   03:46:26   (  68.23, 122.13) 02/28/2018   03:46:24  (  68.25, 122.10)    2.11                 2
 02/28/2018   04:37:07   ( -68.10, -70.38) 02/28/2018   04:35:55  ( -68.10, -70.44)    2.46                72
 03/02/2018   19:12:34   ( -68.36,  70.43) 03/02/2018   19:13:25  ( -68.36,  70.46)    1.46                51
 03/02/2018   20:03:18   (  68.24,-122.10) 03/02/2018   20:02:52  (  68.23,-122.04)    2.78                26
 03/02/2018   20:53:44   ( -67.30,  46.38) 03/02/2018   20:52:36  ( -67.36,  44.59)   77.02                68