Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 6.  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)
 06/06/2021   20:48:57   (  69.73,-132.48) 06/06/2021   20:49:21  (  69.75,-132.55)    3.46                24
 06/06/2021   21:39:38   ( -69.64,  34.98) 06/06/2021   21:38:51  ( -69.64,  34.93)    2.00                47
 06/09/2021   13:05:17   (  69.79, -16.62) 06/09/2021   13:05:47  (  69.82, -16.58)    3.02                30
 06/09/2021   13:55:58   ( -69.70, 150.84) 06/09/2021   13:55:17  ( -69.71, 150.90)    2.53                41
 06/12/2021   05:21:36   (  69.80,  99.31) 06/12/2021   05:22:14  (  69.83,  99.31)    2.85                38
 06/12/2021   06:12:17   ( -69.70, -93.22) 06/12/2021   06:11:44  ( -69.72, -93.20)    2.33                33
 06/14/2021   21:37:54   (  69.81,-144.77) 06/14/2021   21:38:40  (  69.84,-144.80)    3.02                46
 06/14/2021   22:28:35   ( -69.71,  22.71) 06/14/2021   22:28:10  ( -69.73,  22.69)    3.15                25
 06/17/2021   13:54:13   (  69.83, -28.85) 06/17/2021   13:55:07  (  69.85, -28.91)    3.31                54
 06/17/2021   14:44:55   ( -69.77, 138.56) 06/17/2021   14:44:37  ( -69.75, 138.59)    2.50                18
 06/17/2021   15:35:24   (  68.87, -52.85) 06/17/2021   15:34:17  (  68.91, -54.88)   81.21                67