Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 19.  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   02:55:51   (  68.39, 134.58) 02/20/2018   02:56:56  (  68.39, 134.63)    1.97                65
 02/20/2018   03:46:30   ( -68.22, -57.87) 02/20/2018   03:46:26  ( -68.23, -57.93)    2.67                 4
 02/20/2018   04:37:09   (  67.81, 109.95) 02/20/2018   04:35:57  (  67.89, 109.32)   27.94                72
 02/22/2018   19:12:42   (  68.34,-109.57) 02/22/2018   19:13:25  (  68.32,-109.57)    2.04                43
 02/22/2018   20:03:23   ( -68.21,  57.91) 02/22/2018   20:02:55  ( -68.22,  57.94)    1.07                28
 02/25/2018   10:39:06   ( -69.27,-162.35) 02/25/2018   10:40:13  ( -69.20,-160.24)   83.73                67
 02/25/2018   11:29:34   (  68.29,   6.28) 02/25/2018   11:29:54  (  68.30,   6.29)    1.67                20
 02/25/2018   12:20:15   ( -68.16, 173.76) 02/25/2018   12:19:25  ( -68.14, 173.73)    1.96                50
 02/28/2018   02:55:44   ( -68.47, -45.49) 02/28/2018   02:56:55  ( -68.45, -45.29)    8.26                71
 02/28/2018   03:46:26   (  68.24, 122.12) 02/28/2018   03:46:24  (  68.22, 122.07)    2.59                 2
 02/28/2018   04:37:07   ( -68.11, -70.39) 02/28/2018   04:35:54  ( -68.12, -70.41)    2.17                73
 03/02/2018   19:12:35   ( -68.37,  70.43) 03/02/2018   19:13:25  ( -68.37,  70.49)    2.69                50
 03/02/2018   20:03:17   (  68.19,-122.04) 03/02/2018   20:02:52  (  68.20,-122.08)    1.76                25
 03/02/2018   20:53:44   ( -67.30,  46.37) 03/02/2018   20:52:35  ( -67.37,  44.61)   75.81                69