Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 10 9.  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)
 10/11/2020   05:48:35   (  69.08,  92.22) 10/11/2020   05:49:34  (  69.08,  92.22)    0.46                59
 10/11/2020   06:39:16   ( -68.98,-100.31) 10/11/2020   06:39:04  ( -68.97,-100.29)    1.36                12
 10/11/2020   07:29:50   (  68.33,  67.86) 10/11/2020   07:28:40  (  68.36,  66.60)   51.98                70
 10/13/2020   22:04:57   (  69.12,-151.91) 10/13/2020   22:06:01  (  69.12,-151.85)    2.44                64
 10/13/2020   22:55:37   ( -68.95,  15.64) 10/13/2020   22:55:32  ( -68.96,  15.58)    2.56                 5
 10/13/2020   23:46:15   (  68.52,-176.47) 10/13/2020   23:45:04  (  68.57,-177.26)   32.51                71
 10/16/2020   14:21:19   (  69.10, -35.96) 10/16/2020   14:22:30  (  69.11, -35.98)    1.66                71
 10/16/2020   15:12:00   ( -68.98, 131.52) 10/16/2020   15:12:00  ( -69.01, 131.52)    3.26                 0
 10/16/2020   16:02:42   (  68.77, -60.89) 10/16/2020   16:01:29  (  68.78, -61.12)    9.41                73
 10/19/2020   06:37:45   (  69.29,  79.68) 10/19/2020   06:38:57  (  69.21,  80.02)   16.50                72
 10/19/2020   07:28:23   ( -69.01,-112.61) 10/19/2020   07:28:29  ( -69.00,-112.61)    1.01                 6
 10/19/2020   08:19:06   (  68.86,  54.91) 10/19/2020   08:17:56  (  68.88,  54.88)    2.01                70
 10/21/2020   22:54:12   (  69.54,-164.76) 10/21/2020   22:55:22  (  69.42,-163.82)   39.20                70
 10/21/2020   23:44:46   ( -69.04,   3.27) 10/21/2020   23:44:57  ( -69.05,   3.33)    2.37                11
 10/22/2020   00:35:29   (  68.90, 170.77) 10/22/2020   00:34:24  (  68.92, 170.81)    2.93                65