Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 7.  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   13:05:17   (  69.78, -16.61) 06/09/2021   13:05:48  (  69.76, -16.66)    3.41                31
 06/09/2021   13:55:58   ( -69.69, 150.85) 06/09/2021   13:55:17  ( -69.70, 150.90)    2.30                41
 06/12/2021   05:21:36   (  69.79,  99.32) 06/12/2021   05:22:14  (  69.81,  99.29)    3.03                38
 06/12/2021   06:12:17   ( -69.69, -93.21) 06/12/2021   06:11:44  ( -69.71, -93.22)    1.92                33
 06/14/2021   21:37:55   (  69.85,-144.83) 06/14/2021   21:38:39  (  69.87,-144.76)    3.20                44
 06/14/2021   22:28:35   ( -69.69,  22.73) 06/14/2021   22:28:10  ( -69.71,  22.66)    3.14                25
 06/17/2021   13:54:14   (  69.86, -28.90) 06/17/2021   13:55:06  (  69.86, -28.89)    0.51                52
 06/17/2021   14:44:55   ( -69.75, 138.58) 06/17/2021   14:44:36  ( -69.76, 138.60)    1.16                19
 06/17/2021   15:35:24   (  68.85, -52.83) 06/17/2021   15:34:16  (  68.92, -54.86)   81.64                68
 06/20/2021   06:10:33   (  69.87,  87.02) 06/20/2021   06:11:32  (  69.90,  87.05)    3.39                59
 06/20/2021   07:01:14   ( -69.76,-105.49) 06/20/2021   07:01:03  ( -69.75,-105.53)    1.91                11
 06/20/2021   07:51:48   (  69.13,  62.73) 06/20/2021   07:50:38  (  69.18,  61.36)   54.29                70