Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 10 17.  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)
 10/18/2018   02:56:39   (  68.45, 134.50) 10/18/2018   02:57:42  (  68.47, 134.46)    2.62                63
 10/18/2018   03:47:21   ( -68.38, -58.08) 10/18/2018   03:47:12  ( -68.35, -58.04)    2.95                 9
 10/18/2018   04:37:57   (  67.81, 109.94) 10/18/2018   04:36:46  (  67.85, 109.01)   39.37                71
 10/20/2018   19:13:33   (  68.41,-109.68) 10/20/2018   19:14:10  (  68.42,-109.72)    1.61                37
 10/20/2018   20:04:14   ( -68.28,  57.80) 10/20/2018   20:03:40  ( -68.31,  57.79)    3.34                34
 10/23/2018   10:39:53   ( -69.04,-162.06) 10/23/2018   10:41:03  ( -68.95,-160.82)   50.61                70
 10/23/2018   11:30:27   (  68.38,   6.13) 10/23/2018   11:30:38  (  68.39,   6.13)    0.92                11
 10/23/2018   12:21:08   ( -68.25, 173.62) 10/23/2018   12:20:09  ( -68.23, 173.57)    2.80                59
 10/26/2018   02:56:37   ( -68.48, -45.54) 10/26/2018   02:57:39  ( -68.49, -45.52)    1.49                62
 10/26/2018   03:47:21   (  68.35, 121.94) 10/26/2018   03:47:06  (  68.36, 121.98)    2.69                15
 10/26/2018   04:37:55   ( -67.84, -70.10) 10/26/2018   04:36:43  ( -67.88, -70.96)   36.26                72
 10/28/2018   19:13:30   ( -68.44,  70.27) 10/28/2018   19:14:07  ( -68.42,  70.29)    2.33                37
 10/28/2018   20:04:14   (  68.32,-122.26) 10/28/2018   20:03:34  (  68.30,-122.22)    2.75                40