Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 10 23.  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)
 10/23/2018   10:39:53   ( -69.04,-162.06) 10/23/2018   10:41:03  ( -68.90,-160.90)   48.81                70
 10/23/2018   11:30:27   (  68.37,   6.15) 10/23/2018   11:30:37  (  68.39,   6.12)    3.01                10
 10/23/2018   12:21:08   ( -68.24, 173.62) 10/23/2018   12:20:08  ( -68.23, 173.57)    2.70                60
 10/26/2018   02:56:37   ( -68.47, -45.53) 10/26/2018   02:57:37  ( -68.49, -45.52)    2.22                60
 10/26/2018   03:47:21   (  68.33, 121.96) 10/26/2018   03:47:05  (  68.31, 121.91)    3.06                16
 10/26/2018   04:37:52   ( -67.72, -69.96) 10/26/2018   04:36:41  ( -67.82, -71.03)   46.30                71
 10/28/2018   19:13:30   ( -68.43,  70.28) 10/28/2018   19:14:03  ( -68.46,  70.33)    3.28                33
 10/28/2018   20:04:14   (  68.30,-122.24) 10/28/2018   20:03:31  (  68.28,-122.24)    2.89                43
 10/31/2018   10:39:46   (  68.70,  18.39) 10/31/2018   10:40:58  (  68.62,  18.79)   18.16                72
 10/31/2018   11:30:23   ( -68.35,-173.84) 10/31/2018   11:30:31  ( -68.36,-173.90)    2.86                 8
 10/31/2018   12:21:07   (  68.22,  -6.37) 10/31/2018   12:19:58  (  68.23,  -6.41)    2.29                69
 11/03/2018   02:56:36   (  68.46, 134.47) 11/03/2018   02:57:27  (  68.46, 134.48)    0.74                51
 11/03/2018   03:47:17   ( -68.32, -58.03) 11/03/2018   03:46:58  ( -68.32, -58.07)    1.33                19
 11/03/2018   04:37:46   (  67.38, 110.43) 11/03/2018   04:36:38  (  67.45, 108.58)   79.31                68
 11/05/2018   18:23:05   ( -69.57,  81.41) 11/05/2018   18:24:11  ( -69.43,  83.94)   99.94                66
 11/05/2018   19:13:30   (  68.43,-109.73) 11/05/2018   19:13:54  (  68.40,-109.71)    3.24                24
 11/05/2018   20:04:11   ( -68.29,  57.77) 11/05/2018   20:03:24  ( -68.32,  57.82)    3.47                47