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   06:56:56   (  68.39,  74.42) 12/19/2017   06:57:55  (  68.39,  74.39)    1.04                59
 12/19/2017   07:47:36   ( -68.28,-118.12) 12/19/2017   07:47:25  ( -68.28,-118.11)    0.93                11
 12/19/2017   08:38:10   (  67.73,  49.89) 12/19/2017   08:36:59  (  67.78,  48.95)   39.82                71
 12/22/2017   00:02:39   ( -68.74,  -2.44) 12/22/2017   00:03:50  ( -68.62,  -1.82)   28.44                71
 12/22/2017   00:53:15   (  68.28, 165.47) 12/22/2017   00:53:21  (  68.29, 165.43)    2.25                 6
 12/22/2017   01:43:56   ( -68.19, -27.09) 12/22/2017   01:42:51  ( -68.18, -27.07)    1.42                65
 12/24/2017   17:08:46   (  68.40, -78.55) 12/24/2017   17:09:51  (  68.41, -78.57)    1.43                65
 12/24/2017   17:59:27   ( -68.28,  88.93) 12/24/2017   17:59:21  ( -68.30,  88.94)    2.73                 6
 12/24/2017   18:50:05   (  67.91,-103.29) 12/24/2017   18:48:53  (  67.91,-103.87)   24.33                72
 12/27/2017   09:25:03   (  69.21,  36.35) 12/27/2017   09:26:11  (  69.06,  38.12)   72.19                68
 12/27/2017   10:15:31   ( -68.36,-155.20) 12/27/2017   10:15:52  ( -68.35,-155.14)    2.74                21
 12/27/2017   11:06:13   (  68.19,  12.33) 12/27/2017   11:05:20  (  68.18,  12.31)    1.16                53
 12/30/2017   01:41:37   (  69.06, 152.39) 12/30/2017   01:42:46  (  68.99, 153.89)   60.21                69
 12/30/2017   02:32:08   ( -68.35, -39.34) 12/30/2017   02:32:26  ( -68.33, -39.29)    2.33                18
 12/30/2017   03:22:50   (  68.16, 128.22) 12/30/2017   03:21:54  (  68.16, 128.15)    2.75                56