Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 12 7.  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  (  69.17,  96.96)    1.95                42
 12/09/2020   06:20:43   ( -69.05, -95.54) 12/09/2020   06:20:14  ( -69.06, -95.56)    1.32                29
 12/11/2020   21:46:24   (  69.22,-147.17) 12/11/2020   21:47:11  (  69.19,-147.14)    3.21                47
 12/11/2020   22:37:05   ( -69.08,  20.35) 12/11/2020   22:36:41  ( -69.08,  20.36)    0.47                24
 12/11/2020   23:27:31   (  68.04,-170.96) 12/11/2020   23:26:24  (  68.08,-173.23)   94.53                67
 12/14/2020   14:02:44   (  69.20, -31.21) 12/14/2020   14:03:37  (  69.20, -31.24)    1.44                53
 12/14/2020   14:53:26   ( -69.11, 136.23) 12/14/2020   14:53:07  ( -69.10, 136.26)    1.74                19
 12/14/2020   15:43:55   (  68.23, -55.28) 12/14/2020   15:42:47  (  68.26, -57.14)   76.52                68
 12/17/2020   06:19:06   (  69.23,  84.67) 12/17/2020   06:20:04  (  69.21,  84.65)    2.11                58
 12/17/2020   07:09:47   ( -69.09,-107.82) 12/17/2020   07:09:34  ( -69.10,-107.85)    2.21                13
 12/17/2020   08:00:20   (  68.42,  60.39) 12/17/2020   07:59:10  (  68.49,  59.02)   56.29                70
 12/19/2020   22:35:28   (  69.26,-159.45) 12/19/2020   22:36:30  (  69.26,-159.39)    2.52                62
 12/19/2020   23:26:09   ( -69.12,   8.06) 12/19/2020   23:26:01  ( -69.11,   8.04)    2.07                 8
 12/20/2020   00:16:45   (  68.62, 176.06) 12/20/2020   00:15:34  (  68.65, 175.11)   38.49                71