Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 12 8.  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)
 12/09/2020   05:30:02   (  69.19,  96.95) 12/09/2020   05:30:44  (  69.18,  96.96)    1.50                42
 12/09/2020   06:20:43   ( -69.05, -95.54) 12/09/2020   06:20:14  ( -69.06, -95.55)    1.45                29
 12/11/2020   21:46:24   (  69.22,-147.17) 12/11/2020   21:47:11  (  69.20,-147.13)    3.14                47
 12/11/2020   22:37:05   ( -69.08,  20.34) 12/11/2020   22:36:41  ( -69.09,  20.36)    0.70                24
 12/11/2020   23:27:31   (  68.04,-170.96) 12/11/2020   23:26:24  (  68.08,-173.23)   94.21                67
 12/14/2020   14:02:44   (  69.20, -31.22) 12/14/2020   14:03:37  (  69.21, -31.23)    1.00                53
 12/14/2020   14:53:26   ( -69.12, 136.22) 12/14/2020   14:53:07  ( -69.10, 136.26)    2.33                19
 12/14/2020   15:43:55   (  68.24, -55.29) 12/14/2020   15:42:47  (  68.26, -57.13)   75.94                68
 12/17/2020   06:19:06   (  69.24,  84.66) 12/17/2020   06:20:04  (  69.22,  84.66)    2.48                58
 12/17/2020   07:09:47   ( -69.10,-107.83) 12/17/2020   07:09:34  ( -69.11,-107.84)    1.26                13
 12/17/2020   08:00:20   (  68.43,  60.38) 12/17/2020   07:59:10  (  68.49,  59.03)   55.37                70
 12/19/2020   22:35:27   (  69.22,-159.40) 12/19/2020   22:36:31  (  69.22,-159.45)    2.26                64
 12/19/2020   23:26:09   ( -69.14,   8.04) 12/19/2020   23:26:01  ( -69.11,   8.05)    2.97                 8
 12/20/2020   00:16:45   (  68.64, 176.04) 12/20/2020   00:15:34  (  68.66, 175.12)   37.19                71