Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 1 13.  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)
 01/14/2020   12:17:53   ( -68.83, 174.58) 01/14/2020   12:18:50  ( -68.85, 174.56)    2.32                57
 01/14/2020   13:08:37   (  68.70, -17.94) 01/14/2020   13:08:18  (  68.69, -17.99)    1.96                19
 01/14/2020   13:59:07   ( -68.02, 150.26) 01/14/2020   13:57:57  ( -68.09, 148.91)   56.62                70
 01/17/2020   04:34:19   ( -68.88, -69.59) 01/17/2020   04:35:30  ( -68.85, -69.60)    2.96                71
 01/17/2020   05:25:03   (  68.75,  97.89) 01/17/2020   05:24:57  (  68.75,  97.92)    1.38                 6
 01/17/2020   06:15:42   ( -68.55, -94.53) 01/17/2020   06:14:28  ( -68.60, -94.64)    6.88                74
 01/19/2020   20:50:55   ( -69.51,  45.42) 01/19/2020   20:52:04  ( -69.40,  46.93)   60.24                69
 01/19/2020   21:41:27   (  68.75,-146.21) 01/19/2020   21:41:41  (  68.75,-146.27)    2.24                14
 01/19/2020   22:32:08   ( -68.66,  21.23) 01/19/2020   22:31:11  ( -68.66,  21.25)    0.63                57
 01/22/2020   13:57:53   (  68.81, -30.39) 01/22/2020   13:58:30  (  68.80, -30.41)    1.26                37
 01/22/2020   14:48:34   ( -68.71, 137.06) 01/22/2020   14:48:00  ( -68.71, 137.11)    1.93                34
 01/25/2020   06:14:19   (  68.86,  85.43) 01/25/2020   06:15:24  (  68.84,  85.41)    2.56                65
 01/25/2020   07:05:00   ( -68.76,-107.11) 01/25/2020   07:04:54  ( -68.76,-107.06)    2.08                 6
 01/25/2020   07:55:38   (  68.32,  60.78) 01/25/2020   07:54:26  (  68.39,  60.12)   27.87                72