Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and TERRA
TLE Epoch: 2018 1 22.  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   (  69.00, 140.12) 01/23/2018   02:32:03  (  68.87, 141.42)   53.57                69
 01/23/2018   03:21:25   ( -68.32, -51.66) 01/23/2018   03:21:41  ( -68.33, -51.62)    1.53                16
 01/23/2018   04:12:08   (  68.14, 115.87) 01/23/2018   04:11:09  (  68.15, 115.81)    2.63                59
 01/25/2018   18:47:38   (  68.40,-103.31) 01/25/2018   18:48:40  (  68.40,-103.29)    1.01                62
 01/25/2018   19:38:19   ( -68.26,  64.19) 01/25/2018   19:38:11  ( -68.24,  64.16)    2.11                 8
 01/25/2018   20:28:55   (  67.70,-127.81) 01/25/2018   20:27:44  (  67.79,-128.73)   39.73                71
 01/28/2018   11:04:32   (  68.34,  12.53) 01/28/2018   11:05:09  (  68.36,  12.55)    2.42                37
 01/28/2018   11:55:13   ( -68.19,-179.96) 01/28/2018   11:54:40  ( -68.21, 180.00)    2.18                33
 01/31/2018   02:30:52   ( -68.98, -39.86) 01/31/2018   02:32:02  ( -68.88, -38.57)   52.76                70
 01/31/2018   03:21:26   (  68.33, 128.31) 01/31/2018   03:21:37  (  68.31, 128.38)    3.36                11
 01/31/2018   04:12:07   ( -68.18, -64.18) 01/31/2018   04:11:08  ( -68.16, -64.17)    2.55                59
 02/02/2018   18:47:36   ( -68.38,  76.70) 02/02/2018   18:48:39  ( -68.38,  76.70)    0.08                63
 02/02/2018   19:38:20   (  68.27,-115.85) 02/02/2018   19:38:06  (  68.26,-115.80)    2.06                14
 02/02/2018   20:28:54   ( -67.74,  52.13) 02/02/2018   20:27:42  ( -67.83,  51.32)   35.22                72
 02/05/2018   11:04:30   ( -68.32,-167.45) 02/05/2018   11:05:08  ( -68.32,-167.49)    1.57                38
 02/05/2018   11:55:14   (  68.21,  -0.00) 02/05/2018   11:54:35  (  68.20,   0.01)    1.33                39