Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 7 27.  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)
 07/28/2020   04:28:33   (  68.97, 112.13) 07/28/2020   04:29:18  (  68.96, 112.18)    2.49                45
 07/28/2020   05:19:14   ( -68.83, -80.36) 07/28/2020   05:18:48  ( -68.85, -80.33)    2.00                26
 07/30/2020   20:44:56   (  68.97,-131.95) 07/30/2020   20:45:47  (  68.96,-131.93)    0.53                51
 07/30/2020   21:35:38   ( -68.87,  35.50) 07/30/2020   21:35:17  ( -68.86,  35.56)    3.41                21
 07/30/2020   22:26:06   (  67.94,-155.98) 07/30/2020   22:24:58  (  67.96,-157.87)   79.29                68
 08/02/2020   13:01:19   (  68.96, -16.02) 08/02/2020   13:02:16  (  68.97, -16.05)    1.34                57
 08/02/2020   13:52:01   ( -68.87, 151.42) 08/02/2020   13:51:46  ( -68.86, 151.45)    1.36                15
 08/02/2020   14:42:33   (  68.15, -40.33) 08/02/2020   14:41:23  (  68.19, -41.73)   58.14                70
 08/05/2020   05:17:41   (  68.95,  99.90) 08/05/2020   05:18:44  (  68.96,  99.83)    3.12                63
 08/05/2020   06:08:23   ( -68.86, -92.66) 08/05/2020   06:08:14  ( -68.86, -92.67)    0.55                 9
 08/05/2020   06:58:58   (  68.31,  75.39) 08/05/2020   06:57:47  (  68.41,  74.42)   41.48                71
 08/07/2020   21:34:05   (  69.00,-144.25) 08/07/2020   21:35:12  (  69.01,-144.23)    1.62                67
 08/07/2020   22:24:46   ( -68.85,  23.26) 08/07/2020   22:24:43  ( -68.85,  23.20)    2.45                 3
 08/07/2020   23:15:25   (  68.51,-168.97) 08/07/2020   23:14:13  (  68.57,-169.51)   22.66                72