Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and TERRA
TLE Epoch: 2018 1 19.  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)
 01/20/2018   11:04:31   ( -68.34,-167.45) 01/20/2018   11:05:13  ( -68.33,-167.50)    2.20                42
 01/20/2018   11:55:15   (  68.22,   0.01) 01/20/2018   11:54:40  (  68.22,   0.01)    0.44                35
 01/23/2018   02:30:53   (  68.96, 140.18) 01/23/2018   02:32:03  (  68.86, 141.40)   50.00                70
 01/23/2018   03:21:25   ( -68.33, -51.67) 01/23/2018   03:21:41  ( -68.31, -51.64)    2.31                16
 01/23/2018   04:12:08   (  68.16, 115.86) 01/23/2018   04:11:09  (  68.14, 115.80)    3.26                59
 01/25/2018   18:47:38   (  68.41,-103.33) 01/25/2018   18:48:40  (  68.38,-103.31)    3.11                62
 01/25/2018   19:38:19   ( -68.26,  64.18) 01/25/2018   19:38:10  ( -68.28,  64.21)    2.48                 9
 01/25/2018   20:28:55   (  67.71,-127.83) 01/25/2018   20:27:44  (  67.77,-128.75)   39.31                71
 01/28/2018   11:04:32   (  68.35,  12.52) 01/28/2018   11:05:09  (  68.35,  12.53)    0.47                37
 01/28/2018   11:55:13   ( -68.20,-179.97) 01/28/2018   11:54:40  ( -68.19, 179.98)    2.16                33
 01/31/2018   02:30:53   ( -68.98, -39.87) 01/31/2018   02:32:03  ( -68.87, -38.59)   52.84                70
 01/31/2018   03:21:26   (  68.28, 128.37) 01/31/2018   03:21:38  (  68.30, 128.36)    1.70                12
 01/31/2018   04:12:07   ( -68.13, -64.12) 01/31/2018   04:11:09  ( -68.15, -64.19)    3.10                58
 02/02/2018   18:47:36   ( -68.39,  76.69) 02/02/2018   18:48:39  ( -68.37,  76.68)    1.98                63
 02/02/2018   19:38:19   (  68.22,-115.79) 02/02/2018   19:38:06  (  68.25,-115.82)    3.01                13
 02/02/2018   20:28:54   ( -67.75,  52.12) 02/02/2018   20:27:42  ( -67.81,  51.31)   35.21                72