Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 3 9.  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)
 03/10/2018   19:12:42   (  68.32,-109.54) 03/10/2018   19:13:30  (  68.34,-109.53)    3.28                48
 03/10/2018   20:03:23   ( -68.19,  57.94) 03/10/2018   20:03:01  ( -68.19,  57.91)    1.09                22
 03/10/2018   20:53:51   (  67.18,-133.53) 03/10/2018   20:52:43  (  67.23,-135.54)   86.59                68
 03/13/2018   10:39:11   ( -69.39,-162.53) 03/13/2018   10:40:17  ( -69.28,-160.12)   95.47                66
 03/13/2018   11:29:37   (  68.29,   6.25) 03/13/2018   11:30:00  (  68.28,   6.26)    1.85                23
 03/13/2018   12:20:18   ( -68.16, 173.74) 03/13/2018   12:19:30  ( -68.18, 173.78)    2.76                48
 03/16/2018   02:55:51   ( -68.51, -45.57) 03/16/2018   02:57:02  ( -68.44, -45.30)   13.05                71
 03/16/2018   03:46:32   (  68.22, 122.11) 03/16/2018   03:46:31  (  68.21, 122.06)    2.31                 1
 03/16/2018   04:37:14   ( -68.14, -70.47) 03/16/2018   04:36:01  ( -68.12, -70.42)    3.12                73
 03/18/2018   19:12:44   ( -68.33,  70.43) 03/18/2018   19:13:34  ( -68.32,  70.43)    0.47                50
 03/18/2018   20:03:28   (  68.20,-122.10) 03/18/2018   20:03:01  (  68.20,-122.07)    1.23                27
 03/18/2018   20:53:54   ( -67.25,  46.38) 03/18/2018   20:52:46  ( -67.27,  44.49)   81.05                68
 03/21/2018   10:39:14   (  69.26,  17.63) 03/21/2018   10:40:21  (  69.13,  19.68)   82.40                67
 03/21/2018   11:29:39   ( -68.26,-173.71) 03/21/2018   11:30:05  ( -68.26,-173.77)    2.70                26
 03/21/2018   12:20:23   (  68.14,  -6.25) 03/21/2018   12:19:32  (  68.13,  -6.28)    1.16                51