Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 10.  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   (  69.81,  99.29) 06/12/2021   05:22:14  (  69.79,  99.26)    2.90                38
 06/12/2021   06:12:17   ( -69.72, -93.25) 06/12/2021   06:11:43  ( -69.73, -93.19)    2.88                34
 06/14/2021   21:37:55   (  69.81,-144.78) 06/14/2021   21:38:40  (  69.83,-144.80)    2.41                45
 06/14/2021   22:28:36   ( -69.71,  22.69) 06/14/2021   22:28:10  ( -69.73,  22.69)    1.47                26
 06/17/2021   13:54:15   (  69.88, -28.93) 06/17/2021   13:55:06  (  69.88, -28.86)    2.46                51
 06/17/2021   14:44:56   ( -69.77, 138.55) 06/17/2021   14:44:36  ( -69.77, 138.63)    2.89                20
 06/17/2021   15:35:24   (  68.81, -52.77) 06/17/2021   15:34:17  (  68.88, -54.90)   85.64                67
 06/20/2021   06:10:33   (  69.88,  87.00) 06/20/2021   06:11:32  (  69.86,  86.99)    2.56                59
 06/20/2021   07:01:14   ( -69.77,-105.51) 06/20/2021   07:01:02  ( -69.76,-105.51)    1.29                12
 06/20/2021   07:51:47   (  69.09,  62.79) 06/20/2021   07:50:38  (  69.14,  61.31)   58.75                69
 06/22/2021   22:26:52   (  69.89,-157.07) 06/22/2021   22:27:58  (  69.89,-157.08)    0.34                66
 06/22/2021   23:17:33   ( -69.78,  10.43) 06/22/2021   23:17:28  ( -69.80,  10.42)    2.20                 5
 06/23/2021   00:08:11   (  69.37, 178.33) 06/23/2021   00:06:59  (  69.45, 177.60)   30.37                72