Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 4 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)
 04/12/2019   04:37:09   (  68.11, 109.58) 04/12/2019   04:36:02  (  68.11, 109.53)    2.09                67
 04/14/2019   19:12:40   (  68.37,-109.62) 04/14/2019   19:13:32  (  68.38,-109.56)    2.81                52
 04/14/2019   20:03:21   ( -68.23,  57.88) 04/14/2019   20:03:03  ( -68.22,  57.88)    1.49                18
 04/14/2019   20:53:51   (  67.35,-133.72) 04/14/2019   20:52:43  (  67.38,-135.44)   73.43                68
 04/17/2019   11:29:36   (  68.31,   6.22) 04/17/2019   11:30:02  (  68.31,   6.24)    0.92                26
 04/17/2019   12:20:17   ( -68.17, 173.72) 04/17/2019   12:19:33  ( -68.15, 173.68)    2.30                44
 04/20/2019   02:55:51   ( -68.53, -45.61) 04/20/2019   02:57:03  ( -68.47, -45.33)   13.20                72
 04/20/2019   03:46:32   (  68.25, 122.06) 04/20/2019   03:46:32  (  68.24, 122.04)    1.37                 0
 04/20/2019   04:37:14   ( -68.16, -70.50) 04/20/2019   04:36:02  ( -68.14, -70.45)    3.05                72
 04/22/2019   19:12:45   ( -68.37,  70.37) 04/22/2019   19:13:34  ( -68.34,  70.39)    2.64                49
 04/22/2019   20:03:28   (  68.20,-122.11) 04/22/2019   20:03:01  (  68.23,-122.10)    3.15                27
 04/22/2019   20:53:54   ( -67.24,  46.38) 04/22/2019   20:52:46  ( -67.29,  44.46)   83.02                68
 04/25/2019   10:39:12   (  69.16,  17.74) 04/25/2019   10:40:20  (  69.10,  19.58)   72.98                68
 04/25/2019   11:29:40   ( -68.31,-173.79) 04/25/2019   11:30:02  ( -68.33,-173.75)    2.65                22
 04/25/2019   12:20:23   (  68.15,  -6.28) 04/25/2019   12:19:30  (  68.15,  -6.31)    1.51                53