Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 11.  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)
 06/12/2021   05:21:36   (  69.80,  99.30) 06/12/2021   05:22:14  (  69.79,  99.27)    1.71                38
 06/12/2021   06:12:17   ( -69.71, -93.24) 06/12/2021   06:11:44  ( -69.68, -93.25)    3.30                33
 06/14/2021   21:37:56   (  69.86,-144.85) 06/14/2021   21:38:40  (  69.84,-144.79)    3.13                44
 06/14/2021   22:28:36   ( -69.71,  22.70) 06/14/2021   22:28:10  ( -69.74,  22.70)    2.59                26
 06/17/2021   13:54:14   (  69.87, -28.92) 06/17/2021   13:55:05  (  69.89, -28.85)    3.26                51
 06/17/2021   14:44:54   ( -69.71, 138.64) 06/17/2021   14:44:36  ( -69.73, 138.56)    3.24                18
 06/17/2021   15:35:23   (  68.81, -52.77) 06/17/2021   15:34:16  (  68.89, -54.89)   85.58                67
 06/20/2021   06:10:33   (  69.88,  87.01) 06/20/2021   06:11:32  (  69.87,  87.01)    0.93                59
 06/20/2021   07:01:14   ( -69.77,-105.51) 06/20/2021   07:01:02  ( -69.77,-105.50)    0.23                12
 06/20/2021   07:51:47   (  69.09,  62.79) 06/20/2021   07:50:38  (  69.15,  61.33)   58.62                69
 06/22/2021   22:26:52   (  69.89,-157.07) 06/22/2021   22:27:58  (  69.91,-157.06)    1.64                66
 06/22/2021   23:17:33   ( -69.78,  10.43) 06/22/2021   23:17:28  ( -69.81,  10.43)    3.59                 5
 06/23/2021   00:08:11   (  69.36, 178.34) 06/23/2021   00:07:00  (  69.41, 177.54)   31.71                71