Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and TERRA
TLE Epoch: 2017 12 18.  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)
 12/19/2017   06:56:52   (  68.39,  74.45) 12/19/2017   06:57:55  (  68.39,  74.40)    2.18                63
 12/19/2017   07:47:32   ( -68.30,-118.11) 12/19/2017   07:47:25  ( -68.28,-118.10)    2.32                 7
 12/19/2017   08:38:08   (  67.86,  49.76) 12/19/2017   08:36:56  (  67.95,  49.15)   27.40                72
 12/22/2017   00:52:37   (  68.37, 165.53) 12/22/2017   00:53:19  (  68.40, 165.56)    2.89                42
 12/22/2017   01:43:16   ( -68.23, -26.95) 12/22/2017   01:42:50  ( -68.24, -27.01)    2.48                26
 12/22/2017   02:33:40   (  67.14, 141.69) 12/22/2017   02:32:34  (  67.17, 139.43)   97.69                66
 12/24/2017   17:57:57   ( -69.37,  87.93) 12/24/2017   17:59:04  ( -69.22,  90.09)   86.61                67
 12/24/2017   18:48:22   (  68.36,-103.38) 12/24/2017   18:48:45  (  68.33,-103.37)    2.41                23
 12/24/2017   19:39:01   ( -68.20,  64.14) 12/24/2017   19:38:15  ( -68.23,  64.14)    3.02                46
 12/27/2017   11:53:29   ( -68.70, 179.91) 12/27/2017   11:54:40  ( -68.59,-179.56)   25.01                71
 12/27/2017   12:44:06   (  68.34, -12.29) 12/27/2017   12:44:10  (  68.31, -12.25)    3.17                 4
 12/27/2017   13:34:45   ( -68.18, 155.23) 12/27/2017   13:33:41  ( -68.15, 155.19)    3.11                64
 12/30/2017   05:49:09   ( -68.41, -88.64) 12/30/2017   05:50:10  ( -68.39, -88.66)    2.54                61
 12/30/2017   06:39:50   (  68.26,  78.87) 12/30/2017   06:39:37  (  68.27,  78.85)    1.79                13
 12/30/2017   07:30:24   ( -67.83,-113.27) 12/30/2017   07:29:12  ( -67.90,-113.97)   30.25                72