Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and TERRA
TLE Epoch: 2018 1 21.  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)
 01/23/2018   02:30:54   (  68.99, 140.14) 01/23/2018   02:32:03  (  68.88, 141.43)   53.01                69
 01/23/2018   03:21:25   ( -68.31, -51.64) 01/23/2018   03:21:41  ( -68.34, -51.61)    3.14                16
 01/23/2018   04:12:09   (  68.19, 115.82) 01/23/2018   04:11:09  (  68.16, 115.83)    3.00                60
 01/25/2018   18:47:38   (  68.39,-103.30) 01/25/2018   18:48:40  (  68.41,-103.28)    2.13                62
 01/25/2018   19:38:19   ( -68.25,  64.20) 01/25/2018   19:38:11  ( -68.25,  64.17)    1.60                 8
 01/25/2018   20:28:55   (  67.69,-127.80) 01/25/2018   20:27:44  (  67.80,-128.72)   40.33                71
 01/28/2018   11:04:31   (  68.33,  12.55) 01/28/2018   11:05:09  (  68.31,  12.49)    2.76                38
 01/28/2018   11:55:13   ( -68.24, 179.98) 01/28/2018   11:54:39  ( -68.22,-179.99)    2.44                34
 01/31/2018   02:30:52   ( -68.97, -39.85) 01/31/2018   02:32:02  ( -68.89, -38.56)   52.18                70
 01/31/2018   03:21:26   (  68.32, 128.32) 01/31/2018   03:21:37  (  68.32, 128.39)    2.69                11
 01/31/2018   04:12:07   ( -68.17, -64.17) 01/31/2018   04:11:08  ( -68.17, -64.16)    0.37                59
 02/02/2018   18:47:36   ( -68.37,  76.71) 02/02/2018   18:48:39  ( -68.39,  76.71)    2.36                63
 02/02/2018   19:38:20   (  68.26,-115.83) 02/02/2018   19:38:06  (  68.27,-115.79)    1.97                14
 02/02/2018   20:28:54   ( -67.73,  52.14) 02/02/2018   20:27:43  ( -67.78,  51.27)   37.21                71