Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 4.  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)
 02/06/2018   19:12:54   (  68.30,-109.57) 02/06/2018   19:13:26  (  68.30,-109.60)    1.47                32
 02/06/2018   20:03:35   ( -68.18,  57.91) 02/06/2018   20:02:56  ( -68.19,  57.91)    1.69                39
 02/09/2018   10:39:11   ( -68.85,-161.82) 02/09/2018   10:40:22  ( -68.76,-160.80)   42.49                71
 02/09/2018   11:29:46   (  68.24,   6.29) 02/09/2018   11:29:56  (  68.25,   6.23)    3.09                10
 02/09/2018   12:20:28   ( -68.17, 173.70) 02/09/2018   12:19:26  ( -68.15, 173.74)    2.17                62
 02/12/2018   02:55:55   ( -68.36, -45.39) 02/12/2018   02:56:58  ( -68.38, -45.38)    2.09                63
 02/12/2018   03:46:39   (  68.23, 122.08) 02/12/2018   03:46:25  (  68.26, 122.11)    3.34                14
 02/12/2018   04:37:13   ( -67.73, -69.97) 02/12/2018   04:36:02  ( -67.77, -70.82)   36.31                71
 02/14/2018   19:12:48   ( -68.36,  70.39) 02/14/2018   19:13:28  ( -68.33,  70.44)    3.05                40
 02/14/2018   20:03:32   (  68.23,-122.13) 02/14/2018   20:02:55  (  68.21,-122.07)    3.50                37
 02/17/2018   10:39:09   (  69.02,  17.96) 02/17/2018   10:40:18  (  68.88,  19.35)   57.73                69
 02/17/2018   11:29:39   ( -68.30,-173.75) 02/17/2018   11:29:57  ( -68.28,-173.75)    1.74                18
 02/17/2018   12:20:23   (  68.17,  -6.28) 02/17/2018   12:19:24  (  68.15,  -6.25)    2.36                59