Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 5 16.  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)
 05/16/2020   19:24:39   (  68.87,-111.97) 05/16/2020   19:25:29  (  68.90,-111.96)    3.28                50
 05/16/2020   20:15:20   ( -68.78,  55.47) 05/16/2020   20:14:59  ( -68.79,  55.53)    2.24                21
 05/16/2020   21:05:48   (  67.79,-135.94) 05/16/2020   21:04:41  (  67.85,-137.96)   84.91                67
 05/19/2020   11:41:03   (  68.89,   3.92) 05/19/2020   11:41:58  (  68.90,   3.91)    0.77                55
 05/19/2020   12:31:44   ( -68.80, 171.36) 05/19/2020   12:31:28  ( -68.79, 171.41)    2.26                16
 05/19/2020   13:22:15   (  67.97, -20.26) 05/19/2020   13:21:06  (  68.07, -21.82)   66.05                69
 05/22/2020   03:57:26   (  68.91, 119.80) 05/22/2020   03:58:26  (  68.89, 119.79)    2.15                60
 05/22/2020   04:48:06   ( -68.76, -72.68) 05/22/2020   04:47:56  ( -68.78, -72.72)    2.91                10
 05/22/2020   05:38:41   (  68.15,  95.42) 05/22/2020   05:37:31  (  68.23,  94.25)   49.25                70
 05/24/2020   20:13:50   (  68.93,-124.32) 05/24/2020   20:14:54  (  68.94,-124.27)    2.15                64
 05/24/2020   21:04:30   ( -68.78,  43.21) 05/24/2020   21:04:25  ( -68.78,  43.16)    1.87                 5
 05/24/2020   21:55:08   (  68.34,-148.90) 05/24/2020   21:53:57  (  68.39,-149.68)   32.35                71
 05/27/2020   12:30:14   (  68.95,  -8.44) 05/27/2020   12:31:23  (  68.93,  -8.40)    3.20                69
 05/27/2020   13:20:54   ( -68.80, 159.09) 05/27/2020   13:20:53  ( -68.83, 159.10)    3.49                 1
 05/27/2020   14:11:35   (  68.52, -33.23) 05/27/2020   14:10:22  (  68.60, -33.54)   15.07                73