Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 3.  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)
 06/04/2021   03:42:08   ( -70.54, -56.98) 06/04/2021   03:43:16  ( -70.47, -55.05)   72.30                68
 06/04/2021   04:32:39   (  69.74, 111.57) 06/04/2021   04:32:54  (  69.76, 111.59)    2.06                15
 06/04/2021   05:23:20   ( -69.65, -80.98) 06/04/2021   05:22:24  ( -69.65, -80.93)    1.92                56
 06/06/2021   19:58:31   ( -70.80,  58.54) 06/06/2021   19:59:37  ( -70.66,  61.12)   95.93                66
 06/06/2021   20:48:58   (  69.79,-132.57) 06/06/2021   20:49:18  (  69.78,-132.50)    2.97                20
 06/06/2021   21:39:38   ( -69.65,  34.97) 06/06/2021   21:38:48  ( -69.67,  34.99)    2.88                50
 06/09/2021   13:05:17   (  69.79, -16.63) 06/09/2021   13:05:43  (  69.80, -16.59)    1.64                26
 06/09/2021   13:55:58   ( -69.70, 150.84) 06/09/2021   13:55:13  ( -69.69, 150.90)    2.26                45
 06/12/2021   05:21:36   (  69.79,  99.31) 06/12/2021   05:22:08  (  69.81,  99.31)    2.05                32
 06/12/2021   06:12:17   ( -69.69, -93.21) 06/12/2021   06:11:38  ( -69.71, -93.19)    2.30                39
 06/14/2021   21:37:55   (  69.80,-144.75) 06/14/2021   21:38:33  (  69.82,-144.79)    3.03                38
 06/14/2021   22:28:37   ( -69.74,  22.65) 06/14/2021   22:28:03  ( -69.72,  22.71)    2.98                34