Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 2.  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   ( -70.58, -57.04) 06/04/2021   03:43:16  ( -70.43, -55.10)   73.74                68
 06/04/2021   04:32:38   (  69.73, 111.59) 06/04/2021   04:32:54  (  69.72, 111.53)    2.37                16
 06/04/2021   05:23:19   ( -69.64, -80.95) 06/04/2021   05:22:24  ( -69.61, -80.98)    3.37                55
 06/06/2021   19:58:31   ( -70.78,  58.57) 06/06/2021   19:59:37  ( -70.68,  61.14)   95.23                66
 06/06/2021   20:48:58   (  69.78,-132.54) 06/06/2021   20:49:18  (  69.80,-132.48)    3.33                20
 06/06/2021   21:39:38   ( -69.63,  35.00) 06/06/2021   21:38:49  ( -69.63,  34.93)    2.51                49
 06/09/2021   13:05:17   (  69.78, -16.60) 06/09/2021   13:05:44  (  69.76, -16.65)    2.83                27
 06/09/2021   13:55:58   ( -69.68, 150.87) 06/09/2021   13:55:14  ( -69.65, 150.84)    2.98                44
 06/12/2021   05:21:37   (  69.83,  99.26) 06/12/2021   05:22:08  (  69.82,  99.33)    2.83                31
 06/12/2021   06:12:17   ( -69.67, -93.19) 06/12/2021   06:11:39  ( -69.67, -93.25)    2.78                38
 06/14/2021   21:37:55   (  69.83,-144.81) 06/14/2021   21:38:32  (  69.83,-144.78)    1.25                37
 06/14/2021   22:28:36   ( -69.72,  22.68) 06/14/2021   22:28:02  ( -69.73,  22.72)    1.44                34