Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 18.  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)
 02/20/2018   02:55:50   (  68.39, 134.59) 02/20/2018   02:56:55  (  68.39, 134.64)    2.02                65
 02/20/2018   03:46:31   ( -68.26, -57.93) 02/20/2018   03:46:26  ( -68.24, -57.92)    3.02                 5
 02/20/2018   04:37:09   (  67.80, 109.96) 02/20/2018   04:35:57  (  67.89, 109.32)   28.52                72
 02/22/2018   19:12:42   (  68.33,-109.56) 02/22/2018   19:13:25  (  68.32,-109.57)    1.65                43
 02/22/2018   20:03:23   ( -68.21,  57.92) 02/22/2018   20:02:55  ( -68.22,  57.94)    1.62                28
 02/25/2018   10:39:06   ( -69.27,-162.35) 02/25/2018   10:40:13  ( -69.19,-160.25)   83.04                67
 02/25/2018   11:29:34   (  68.28,   6.29) 02/25/2018   11:29:54  (  68.29,   6.27)    1.16                20
 02/25/2018   12:20:15   ( -68.15, 173.77) 02/25/2018   12:19:25  ( -68.14, 173.72)    2.45                50
 02/28/2018   02:55:44   ( -68.47, -45.48) 02/28/2018   02:56:55  ( -68.43, -45.32)    7.61                71
 02/28/2018   03:46:26   (  68.23, 122.13) 02/28/2018   03:46:23  (  68.25, 122.11)    2.47                 3
 02/28/2018   04:37:07   ( -68.10, -70.38) 02/28/2018   04:35:54  ( -68.10, -70.43)    2.11                73
 03/02/2018   19:12:34   ( -68.36,  70.43) 03/02/2018   19:13:24  ( -68.34,  70.45)    3.11                50
 03/02/2018   20:03:17   (  68.19,-122.03) 03/02/2018   20:02:51  (  68.21,-122.06)    2.76                26
 03/02/2018   20:53:43   ( -67.24,  46.44) 03/02/2018   20:52:35  ( -67.33,  44.57)   80.96                68