Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 5 20.  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)
 05/22/2020   03:57:26   (  68.90, 119.82) 05/22/2020   03:58:26  (  68.89, 119.79)    1.12                60
 05/22/2020   04:48:07   ( -68.81, -72.74) 05/22/2020   04:47:56  ( -68.78, -72.72)    3.35                11
 05/22/2020   05:38:41   (  68.14,  95.44) 05/22/2020   05:37:31  (  68.23,  94.25)   50.19                70
 05/24/2020   20:13:50   (  68.92,-124.30) 05/24/2020   20:14:54  (  68.93,-124.28)    2.08                64
 05/24/2020   21:04:31   ( -68.82,  43.15) 05/24/2020   21:04:24  ( -68.82,  43.22)    2.84                 7
 05/24/2020   21:55:08   (  68.32,-148.88) 05/24/2020   21:53:57  (  68.38,-149.68)   33.59                71
 05/27/2020   12:30:14   (  68.94,  -8.42) 05/27/2020   12:31:23  (  68.91,  -8.42)    2.74                69
 05/27/2020   13:20:53   ( -68.79, 159.10) 05/27/2020   13:20:52  ( -68.81, 159.08)    2.14                 1
 05/27/2020   14:11:34   (  68.50, -33.21) 05/27/2020   14:10:21  (  68.58, -33.55)   16.43                73
 05/30/2020   04:46:38   (  69.01, 107.39) 05/30/2020   04:47:49  (  69.00, 107.58)    7.75                71
 05/30/2020   05:37:17   ( -68.81, -85.01) 05/30/2020   05:37:21  ( -68.79, -85.06)    3.12                 4
 05/30/2020   06:28:01   (  68.69,  82.46) 05/30/2020   06:26:48  (  68.67,  82.44)    2.16                73
 06/01/2020   21:03:05   (  69.20,-136.96) 06/01/2020   21:04:16  (  69.09,-136.43)   24.51                71
 06/01/2020   21:53:41   ( -68.83,  30.87) 06/01/2020   21:53:49  ( -68.82,  30.86)    1.02                 8
 06/01/2020   22:44:25   (  68.71,-161.67) 06/01/2020   22:43:16  (  68.70,-161.64)    1.88                69