Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 10 8.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/08/2020   13:32:12   (  69.06, -23.66) 10/08/2020   13:33:05  (  69.08, -23.66)    2.45                53
 10/08/2020   14:22:53   ( -68.96, 143.80) 10/08/2020   14:22:35  ( -68.97, 143.83)    1.69                18
 10/08/2020   15:13:23   (  68.09, -47.75) 10/08/2020   15:12:15  (  68.14, -49.54)   74.68                68
 10/11/2020   05:48:35   (  69.09,  92.21) 10/11/2020   05:49:34  (  69.06,  92.20)    3.36                59
 10/11/2020   06:39:15   ( -68.94,-100.25) 10/11/2020   06:39:04  ( -68.95,-100.31)    3.04                11
 10/11/2020   07:29:49   (  68.29,  67.92) 10/11/2020   07:28:40  (  68.34,  66.58)   55.37                69
 10/13/2020   22:04:57   (  69.07,-151.85) 10/13/2020   22:06:02  (  69.09,-151.88)    2.59                65
 10/13/2020   22:55:38   ( -68.96,  15.62) 10/13/2020   22:55:32  ( -68.99,  15.62)    2.97                 6
 10/13/2020   23:46:16   (  68.54,-176.49) 10/13/2020   23:45:04  (  68.60,-177.23)   30.68                72
 10/16/2020   14:21:19   (  69.11, -35.98) 10/16/2020   14:22:29  (  69.12, -35.96)    1.42                70
 10/16/2020   15:12:00   ( -69.00, 131.50) 10/16/2020   15:12:00  ( -68.97, 131.47)    3.32                 0
 10/16/2020   16:02:41   (  68.74, -60.84) 10/16/2020   16:01:28  (  68.79, -61.10)   12.47                73
 10/19/2020   06:37:44   (  69.26,  79.73) 10/19/2020   06:38:56  (  69.20,  80.02)   13.03                72
 10/19/2020   07:28:22   ( -68.97,-112.56) 10/19/2020   07:28:28  ( -68.99,-112.62)    3.19                 6
 10/19/2020   08:19:06   (  68.88,  54.88) 10/19/2020   08:17:55  (  68.87,  54.87)    1.23                71
 10/21/2020   22:54:10   (  69.46,-164.64) 10/21/2020   22:55:21  (  69.39,-163.86)   31.59                71
 10/21/2020   23:44:45   ( -69.01,   3.31) 10/21/2020   23:44:56  ( -69.01,   3.29)    1.11                11
 10/22/2020   00:35:28   (  68.87, 170.82) 10/22/2020   00:34:23  (  68.89, 170.78)    2.69                65