Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 10 18.  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)
 10/19/2020   06:37:44   (  69.28,  79.70) 10/19/2020   06:38:56  (  69.20,  80.01)   15.01                72
 10/19/2020   07:28:22   ( -69.01,-112.60) 10/19/2020   07:28:27  ( -69.03,-112.57)    3.12                 5
 10/19/2020   08:19:05   (  68.85,  54.93) 10/19/2020   08:17:55  (  68.87,  54.87)    3.29                70
 10/21/2020   22:54:10   (  69.48,-164.67) 10/21/2020   22:55:21  (  69.38,-163.87)   33.26                71
 10/21/2020   23:44:44   ( -68.99,   3.34) 10/21/2020   23:44:56  ( -69.00,   3.27)    3.13                12
 10/22/2020   00:35:28   (  68.89, 170.79) 10/22/2020   00:34:23  (  68.89, 170.77)    0.90                65
 10/24/2020   15:10:36   (  69.69, -49.05) 10/24/2020   15:11:45  (  69.62, -47.67)   53.98                69
 10/24/2020   16:01:07   ( -69.03, 119.21) 10/24/2020   16:01:24  ( -69.02, 119.17)    1.85                17
 10/24/2020   16:51:50   (  68.88, -73.28) 10/24/2020   16:50:51  (  68.90, -73.33)    2.52                59
 10/27/2020   07:27:02   (  69.89,  66.56) 10/27/2020   07:28:10  (  69.79,  68.45)   73.36                68
 10/27/2020   08:17:29   ( -69.02,-124.86) 10/27/2020   08:17:52  ( -69.03,-124.93)    3.25                23
 10/27/2020   09:08:12   (  68.93,  42.57) 10/27/2020   09:07:18  (  68.91,  42.56)    2.63                54
 10/29/2020   23:43:27   (  70.10,-177.84) 10/29/2020   23:44:33  (  70.02,-175.35)   94.73                66
 10/30/2020   00:33:51   ( -69.06,  -9.00) 10/30/2020   00:34:19  ( -69.04,  -9.04)    2.99                28
 10/30/2020   01:24:34   (  68.93, 158.49) 10/30/2020   01:23:46  (  68.91, 158.45)    2.45                48