Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 12 4.  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)
 12/06/2020   13:13:40   (  69.16, -18.93) 12/06/2020   13:14:17  (  69.15, -18.95)    1.53                37
 12/06/2020   14:04:21   ( -69.02, 148.59) 12/06/2020   14:03:47  ( -69.04, 148.54)    3.02                34
 12/09/2020   05:30:02   (  69.19,  96.95) 12/09/2020   05:30:44  (  69.17,  96.96)    1.62                42
 12/09/2020   06:20:43   ( -69.05, -95.53) 12/09/2020   06:20:14  ( -69.07, -95.55)    2.39                29
 12/11/2020   21:46:23   (  69.17,-147.09) 12/11/2020   21:47:11  (  69.19,-147.13)    3.32                48
 12/11/2020   22:37:05   ( -69.08,  20.35) 12/11/2020   22:36:41  ( -69.09,  20.36)    1.16                24
 12/11/2020   23:27:31   (  68.04,-170.96) 12/11/2020   23:26:24  (  68.08,-173.23)   94.42                67
 12/14/2020   14:02:44   (  69.20, -31.21) 12/14/2020   14:03:37  (  69.20, -31.24)    1.03                53
 12/14/2020   14:53:26   ( -69.11, 136.23) 12/14/2020   14:53:07  ( -69.10, 136.26)    1.77                19
 12/14/2020   15:43:55   (  68.23, -55.29) 12/14/2020   15:42:47  (  68.26, -57.14)   76.38                68
 12/17/2020   06:19:06   (  69.23,  84.66) 12/17/2020   06:20:03  (  69.26,  84.72)    3.53                57
 12/17/2020   07:09:47   ( -69.09,-107.82) 12/17/2020   07:09:34  ( -69.10,-107.85)    1.55                13
 12/17/2020   08:00:20   (  68.43,  60.38) 12/17/2020   07:59:10  (  68.48,  59.02)   56.04                70