Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and TERRA
TLE Epoch: 2017 12 27.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/27/2017   11:04:38   (  68.35,  12.57) 12/27/2017   11:05:10  (  68.36,  12.55)    2.09                32
 12/27/2017   11:55:20   ( -68.26, 180.00) 12/27/2017   11:54:40  ( -68.25,-179.95)    2.34                40
 12/30/2017   02:30:56   ( -68.91, -39.71) 12/30/2017   02:32:07  ( -68.78, -38.70)   42.85                71
 12/30/2017   03:21:31   (  68.31, 128.39) 12/30/2017   03:21:40  (  68.34, 128.40)    3.44                 9
 12/30/2017   04:12:12   ( -68.17, -64.11) 12/30/2017   04:11:11  ( -68.18, -64.16)    2.38                61
 01/01/2018   18:47:40   ( -68.44,  76.68) 01/01/2018   18:48:42  ( -68.43,  76.74)    2.76                62
 01/01/2018   19:38:23   (  68.27,-115.79) 01/01/2018   19:38:10  (  68.26,-115.82)    1.99                13
 01/01/2018   20:28:57   ( -67.75,  52.18) 01/01/2018   20:27:46  ( -67.82,  51.30)   37.90                71
 01/04/2018   11:04:32   ( -68.35,-167.42) 01/04/2018   11:05:13  ( -68.34,-167.49)    2.51                41
 01/04/2018   11:55:16   (  68.24,   0.03) 01/04/2018   11:54:40  (  68.23,   0.02)    0.76                36
 01/07/2018   02:30:55   (  69.05, 140.09) 01/07/2018   02:32:04  (  68.92, 141.47)   56.84                69
 01/07/2018   03:21:25   ( -68.31, -51.60) 01/07/2018   03:21:43  ( -68.31, -51.64)    1.90                18
 01/07/2018   04:12:09   (  68.20, 115.85) 01/07/2018   04:11:10  (  68.20, 115.86)    0.73                59
 01/09/2018   18:47:37   (  68.42,-103.30) 01/09/2018   18:48:42  (  68.44,-103.25)    2.54                65
 01/09/2018   19:38:18   ( -68.26,  64.22) 01/09/2018   19:38:13  ( -68.28,  64.20)    2.06                 5
 01/09/2018   20:28:56   (  67.83,-127.93) 01/09/2018   20:27:44  (  67.94,-128.56)   28.81                72