Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 5 12.  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)
 05/14/2020   03:08:15   (  68.85, 132.15) 05/14/2020   03:09:01  (  68.86, 132.10)    2.36                46
 05/14/2020   03:58:56   ( -68.76, -60.40) 05/14/2020   03:58:31  ( -68.75, -60.41)    1.17                25
 05/16/2020   19:24:40   (  68.92,-112.03) 05/16/2020   19:25:29  (  68.91,-111.96)    3.15                49
 05/16/2020   20:15:20   ( -68.77,  55.49) 05/16/2020   20:15:00  ( -68.75,  55.47)    3.17                20
 05/16/2020   21:05:48   (  67.79,-135.93) 05/16/2020   21:04:41  (  67.85,-137.96)   85.47                67
 05/19/2020   11:41:02   (  68.88,   3.93) 05/19/2020   11:41:57  (  68.89,   3.90)    1.56                55
 05/19/2020   12:31:43   ( -68.79, 171.38) 05/19/2020   12:31:27  ( -68.79, 171.41)    1.13                16
 05/19/2020   13:22:14   (  67.96, -20.24) 05/19/2020   13:21:05  (  68.06, -21.83)   67.10                69
 05/22/2020   03:57:26   (  68.90, 119.81) 05/22/2020   03:58:25  (  68.93, 119.83)    3.06                59
 05/22/2020   04:48:07   ( -68.80, -72.73) 05/22/2020   04:47:56  ( -68.77, -72.73)    3.26                11
 05/22/2020   05:38:41   (  68.14,  95.44) 05/22/2020   05:37:31  (  68.20,  94.22)   50.85                70
 05/24/2020   20:13:50   (  68.92,-124.30) 05/24/2020   20:14:54  (  68.90,-124.32)    2.33                64
 05/24/2020   21:04:31   ( -68.82,  43.16) 05/24/2020   21:04:24  ( -68.80,  43.19)    1.96                 7
 05/24/2020   21:55:08   (  68.32,-148.88) 05/24/2020   21:53:56  (  68.40,-149.66)   33.03                72