Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 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)
 06/09/2021   13:05:16   (  69.76, -16.57) 06/09/2021   13:05:47  (  69.78, -16.63)    3.25                31
 06/09/2021   13:55:57   ( -69.67, 150.88) 06/09/2021   13:55:17  ( -69.67, 150.85)    1.20                40
 06/12/2021   05:21:36   (  69.82,  99.28) 06/12/2021   05:22:13  (  69.84,  99.32)    2.72                37
 06/12/2021   06:12:17   ( -69.72, -93.25) 06/12/2021   06:11:43  ( -69.73, -93.19)    2.54                34
 06/14/2021   21:37:55   (  69.82,-144.79) 06/14/2021   21:38:40  (  69.83,-144.81)    1.27                45
 06/14/2021   22:28:36   ( -69.72,  22.69) 06/14/2021   22:28:10  ( -69.73,  22.68)    0.74                26
 06/17/2021   13:54:15   (  69.88, -28.94) 06/17/2021   13:55:06  (  69.88, -28.87)    2.80                51
 06/17/2021   14:44:55   ( -69.72, 138.63) 06/17/2021   14:44:37  ( -69.72, 138.55)    2.80                18
 06/17/2021   15:35:24   (  68.82, -52.78) 06/17/2021   15:34:17  (  68.88, -54.90)   85.28                67
 06/20/2021   06:10:33   (  69.89,  86.99) 06/20/2021   06:11:32  (  69.86,  86.99)    3.28                59
 06/20/2021   07:01:14   ( -69.78,-105.52) 06/20/2021   07:01:02  ( -69.76,-105.51)    1.60                12
 06/20/2021   07:51:47   (  69.10,  62.78) 06/20/2021   07:50:38  (  69.14,  61.31)   58.23                69