Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 1 4.  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)
 01/05/2018   18:22:42   ( -68.98,  82.16) 01/05/2018   18:23:51  ( -68.89,  83.49)   54.26                69
 01/05/2018   19:13:15   (  68.28,-109.59) 01/05/2018   19:13:27  (  68.28,-109.62)    0.99                12
 01/05/2018   20:03:57   ( -68.19,  57.83) 01/05/2018   20:02:57  ( -68.17,  57.89)    3.10                60
 01/08/2018   10:39:25   ( -68.41,-161.30) 01/08/2018   10:40:29  ( -68.40,-161.23)    3.19                64
 01/08/2018   11:30:08   (  68.24,   6.23) 01/08/2018   11:29:57  (  68.23,   6.21)    1.59                11
 01/08/2018   12:20:44   ( -67.83, 174.06) 01/08/2018   12:19:32  ( -67.85, 173.39)   28.17                72
 01/11/2018   02:56:16   ( -68.32, -45.41) 01/11/2018   02:56:58  ( -68.35, -45.42)    2.66                42
 01/11/2018   03:47:00   (  68.21, 122.04) 01/11/2018   03:46:25  (  68.23, 122.09)    3.27                35
 01/13/2018   18:22:39   (  69.03, -97.89) 01/13/2018   18:23:48  (  68.95, -96.42)   59.30                69
 01/13/2018   19:13:09   ( -68.29,  70.40) 01/13/2018   19:13:28  ( -68.29,  70.40)    0.22                19
 01/13/2018   20:03:53   (  68.18,-122.14) 01/13/2018   20:02:55  (  68.17,-122.10)    1.84                58
 01/16/2018   10:39:20   (  68.36,  18.78) 01/16/2018   10:40:27  (  68.38,  18.76)    3.13                67
 01/16/2018   11:30:02   ( -68.26,-173.78) 01/16/2018   11:29:57  ( -68.28,-173.73)    3.27                 5
 01/16/2018   12:20:41   (  67.88,  -5.99) 01/16/2018   12:19:28  (  67.94,  -6.49)   21.93                73