Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 5 29.  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   ( -70.13,  71.80) 05/29/2021   19:10:33  ( -70.04,  72.56)   30.45                71
 05/29/2021   20:00:00   (  69.69,-120.23) 05/29/2021   20:00:04  (  69.71,-120.25)    2.94                 4
 05/29/2021   20:50:41   ( -69.60,  47.22) 05/29/2021   20:49:34  ( -69.60,  47.23)    0.72                67
 06/01/2021   11:25:45   ( -70.32,-172.57) 06/01/2021   11:26:55  ( -70.24,-171.27)   49.78                70
 06/01/2021   12:16:20   (  69.73,  -4.35) 06/01/2021   12:16:29  (  69.74,  -4.32)    1.98                 9
 06/01/2021   13:07:01   ( -69.64, 163.10) 06/01/2021   13:05:59  ( -69.63, 163.16)    2.79                62
 06/04/2021   03:42:09   ( -70.58, -57.04) 06/04/2021   03:43:17  ( -70.43, -55.10)   73.45                68
 06/04/2021   04:32:39   (  69.72, 111.59) 06/04/2021   04:32:55  (  69.72, 111.53)    2.75                16
 06/04/2021   05:23:19   ( -69.63, -80.95) 06/04/2021   05:22:24  ( -69.61, -80.98)    2.94                55
 06/06/2021   19:58:31   ( -70.77,  58.58) 06/06/2021   19:59:37  ( -70.68,  61.14)   94.82                66
 06/06/2021   20:48:58   (  69.77,-132.54) 06/06/2021   20:49:18  (  69.79,-132.48)    3.23                20
 06/06/2021   21:39:38   ( -69.62,  35.01) 06/06/2021   21:38:49  ( -69.64,  34.93)    3.11                49
 06/09/2021   13:05:17   (  69.77, -16.59) 06/09/2021   13:05:44  (  69.76, -16.65)    2.60                27
 06/09/2021   13:55:58   ( -69.67, 150.88) 06/09/2021   13:55:14  ( -69.66, 150.85)    1.76                44