Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 9 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)
 09/14/2020   10:14:08   ( -69.22,-154.44) 09/14/2020   10:15:19  ( -69.18,-154.07)   14.87                71
 09/14/2020   11:04:49   (  68.94,  13.26) 09/14/2020   11:04:49  (  68.91,  13.23)    3.13                 0
 09/14/2020   11:55:29   ( -68.79,-179.22) 09/14/2020   11:54:19  ( -68.80,-179.29)    2.93                70
 09/17/2020   02:30:34   ( -69.39, -38.77) 09/17/2020   02:31:46  ( -69.27, -38.08)   30.42                72
 09/17/2020   03:21:12   (  68.96, 129.15) 09/17/2020   03:21:17  (  68.94, 129.15)    1.32                 5
 09/17/2020   04:11:53   ( -68.86, -63.39) 09/17/2020   04:10:47  ( -68.83, -63.36)    3.31                66
 09/19/2020   18:47:01   ( -69.62,  76.81) 09/19/2020   18:48:10  ( -69.52,  78.14)   52.58                69
 09/19/2020   19:37:35   (  68.97,-114.96) 09/19/2020   19:37:45  (  68.97,-114.94)    0.83                10
 09/19/2020   20:28:16   ( -68.88,  52.50) 09/19/2020   20:27:15  ( -68.86,  52.56)    2.82                61
 09/22/2020   11:03:27   ( -69.80,-167.53) 09/22/2020   11:04:35  ( -69.72,-165.72)   70.38                68
 09/22/2020   11:53:58   (  68.99,   0.93) 09/22/2020   11:54:13  (  69.00,   0.97)    1.78                15
 09/22/2020   12:44:38   ( -68.84, 168.46) 09/22/2020   12:43:44  ( -68.84, 168.41)    2.23                54
 09/25/2020   03:19:52   ( -69.97, -51.88) 09/25/2020   03:20:59  ( -69.91, -49.57)   88.41                67
 09/25/2020   04:10:20   (  69.02, 116.81) 09/25/2020   04:10:40  (  69.02, 116.88)    2.71                20
 09/25/2020   05:01:00   ( -68.86, -75.65) 09/25/2020   05:00:11  ( -68.86, -75.68)    1.25                49