Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 12 1.  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)
 12/01/2020   04:40:57   (  69.11, 109.29) 12/01/2020   04:41:23  (  69.13, 109.25)    2.09                26
 12/01/2020   05:31:39   ( -69.02, -83.27) 12/01/2020   05:30:53  ( -69.02, -83.26)    1.19                46
 12/03/2020   20:57:18   (  69.14,-134.82) 12/03/2020   20:57:49  (  69.17,-134.81)    3.55                31
 12/03/2020   21:48:00   ( -69.05,  32.62) 12/03/2020   21:47:19  ( -69.06,  32.68)    2.58                41
 12/06/2020   13:13:40   (  69.16, -18.93) 12/06/2020   13:14:17  (  69.14, -18.96)    2.15                37
 12/06/2020   14:04:21   ( -69.02, 148.59) 12/06/2020   14:03:47  ( -69.04, 148.54)    3.11                34
 12/09/2020   05:30:02   (  69.19,  96.95) 12/09/2020   05:30:44  (  69.17,  96.95)    2.18                42
 12/09/2020   06:20:43   ( -69.04, -95.53) 12/09/2020   06:20:14  ( -69.06, -95.55)    2.47                29
 12/11/2020   21:46:23   (  69.16,-147.09) 12/11/2020   21:47:11  (  69.18,-147.14)    3.14                48
 12/11/2020   22:37:05   ( -69.07,  20.36) 12/11/2020   22:36:41  ( -69.08,  20.36)    1.09                24
 12/11/2020   23:27:31   (  68.04,-170.96) 12/11/2020   23:26:24  (  68.07,-173.24)   94.81                67
 12/14/2020   14:02:44   (  69.19, -31.21) 12/14/2020   14:03:37  (  69.19, -31.25)    1.62                53
 12/14/2020   14:53:26   ( -69.10, 136.24) 12/14/2020   14:53:07  ( -69.09, 136.25)    1.49                19
 12/14/2020   15:43:55   (  68.23, -55.28) 12/14/2020   15:42:47  (  68.25, -57.15)   76.95                68