Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 5 27.  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)
 05/29/2021   19:09:22   ( -70.12,  71.81) 05/29/2021   19:10:33  ( -70.05,  72.57)   30.14                71
 05/29/2021   20:00:01   (  69.73,-120.30) 05/29/2021   20:00:04  (  69.72,-120.24)    2.92                 3
 05/29/2021   20:50:41   ( -69.60,  47.23) 05/29/2021   20:49:34  ( -69.61,  47.24)    1.33                67
 06/01/2021   11:25:45   ( -70.32,-172.57) 06/01/2021   11:26:55  ( -70.25,-171.26)   50.00                70
 06/01/2021   12:16:20   (  69.73,  -4.35) 06/01/2021   12:16:29  (  69.75,  -4.31)    2.92                 9
 06/01/2021   13:07:00   ( -69.59, 163.18) 06/01/2021   13:06:00  ( -69.59, 163.10)    2.86                60
 06/04/2021   03:42:08   ( -70.58, -57.04) 06/04/2021   03:43:16  ( -70.44, -55.09)   74.06                68
 06/04/2021   04:32:38   (  69.73, 111.59) 06/04/2021   04:32:54  (  69.72, 111.54)    1.99                16
 06/04/2021   05:23:19   ( -69.64, -80.95) 06/04/2021   05:22:24  ( -69.62, -80.97)    1.99                55
 06/06/2021   19:58:31   ( -70.79,  58.56) 06/06/2021   19:59:37  ( -70.69,  61.16)   95.97                66
 06/06/2021   20:48:57   (  69.73,-132.47) 06/06/2021   20:49:19  (  69.75,-132.55)    3.28                22
 06/06/2021   21:39:38   ( -69.63,  34.99) 06/06/2021   21:38:49  ( -69.65,  34.95)    2.10                49
 06/09/2021   13:05:17   (  69.79, -16.62) 06/09/2021   13:05:44  (  69.77, -16.64)    2.68                27
 06/09/2021   13:55:58   ( -69.69, 150.85) 06/09/2021   13:55:14  ( -69.67, 150.86)    2.16                44