Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 21.  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)
 02/22/2018   19:12:42   (  68.35,-109.58) 02/22/2018   19:13:24  (  68.37,-109.51)    3.44                42
 02/22/2018   20:03:23   ( -68.22,  57.90) 02/22/2018   20:02:55  ( -68.20,  57.92)    2.93                28
 02/25/2018   10:39:06   ( -69.28,-162.37) 02/25/2018   10:40:13  ( -69.17,-160.28)   83.68                67
 02/25/2018   11:29:34   (  68.30,   6.27) 02/25/2018   11:29:54  (  68.28,   6.26)    2.03                20
 02/25/2018   12:20:15   ( -68.17, 173.75) 02/25/2018   12:19:24  ( -68.17, 173.77)    0.89                51
 02/28/2018   02:55:43   ( -68.43, -45.44) 02/28/2018   02:56:55  ( -68.40, -45.35)    4.93                72
 02/28/2018   03:46:26   (  68.25, 122.11) 02/28/2018   03:46:23  (  68.23, 122.09)    1.86                 3
 02/28/2018   04:37:06   ( -68.07, -70.34) 02/28/2018   04:35:54  ( -68.07, -70.46)    5.10                72
 03/02/2018   19:12:34   ( -68.33,  70.47) 03/02/2018   19:13:24  ( -68.35,  70.47)    2.07                50
 03/02/2018   20:03:18   (  68.21,-122.06) 03/02/2018   20:02:51  (  68.23,-122.03)    3.32                27
 03/02/2018   20:53:44   ( -67.27,  46.41) 03/02/2018   20:52:36  ( -67.29,  44.53)   80.86                68
 03/05/2018   10:39:01   (  69.34,  17.58) 03/05/2018   10:40:07  (  69.22,  19.81)   88.92                66
 03/05/2018   11:29:25   ( -68.29,-173.69) 03/05/2018   11:29:52  ( -68.29,-173.72)    1.38                27
 03/05/2018   12:20:09   (  68.17,  -6.23) 03/05/2018   12:19:19  (  68.17,  -6.22)    0.17                50