Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 5 30.  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)
 06/01/2021   11:25:45   ( -70.33,-172.58) 06/01/2021   11:26:55  ( -70.24,-171.27)   50.03                70
 06/01/2021   12:16:20   (  69.73,  -4.36) 06/01/2021   12:16:29  (  69.74,  -4.32)    1.89                 9
 06/01/2021   13:07:01   ( -69.65, 163.09) 06/01/2021   13:05:59  ( -69.63, 163.16)    3.17                62
 06/04/2021   03:42:09   ( -70.58, -57.05) 06/04/2021   03:43:17  ( -70.43, -55.11)   73.90                68
 06/04/2021   04:32:38   (  69.73, 111.59) 06/04/2021   04:32:54  (  69.72, 111.53)    2.83                16
 06/04/2021   05:23:19   ( -69.64, -80.96) 06/04/2021   05:22:23  ( -69.66, -80.91)    3.14                56
 06/06/2021   19:58:31   ( -70.78,  58.56) 06/06/2021   19:59:37  ( -70.67,  61.14)   95.40                66
 06/06/2021   20:48:58   (  69.78,-132.55) 06/06/2021   20:49:18  (  69.79,-132.48)    2.80                20
 06/06/2021   21:39:38   ( -69.63,  34.99) 06/06/2021   21:38:49  ( -69.63,  34.93)    2.36                49
 06/09/2021   13:05:17   (  69.78, -16.61) 06/09/2021   13:05:43  (  69.81, -16.58)    3.22                26
 06/09/2021   13:55:58   ( -69.68, 150.86) 06/09/2021   13:55:14  ( -69.65, 150.84)    3.28                44
 06/12/2021   05:21:37   (  69.84,  99.25) 06/12/2021   05:22:08  (  69.82,  99.32)    3.47                31
 06/12/2021   06:12:17   ( -69.68, -93.19) 06/12/2021   06:11:39  ( -69.67, -93.25)    2.71                38