Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 5 31.  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   ( -70.35,-172.62) 06/01/2021   11:26:55  ( -70.21,-171.31)   51.63                70
 06/01/2021   12:16:19   (  69.71,  -4.32) 06/01/2021   12:16:29  (  69.72,  -4.35)    1.93                10
 06/01/2021   13:07:00   ( -69.62, 163.13) 06/01/2021   13:05:59  ( -69.61, 163.13)    1.60                61
 06/04/2021   03:42:08   ( -70.56, -57.01) 06/04/2021   03:43:16  ( -70.46, -55.07)   72.81                68
 06/04/2021   04:32:39   (  69.76, 111.55) 06/04/2021   04:32:54  (  69.75, 111.57)    1.56                15
 06/04/2021   05:23:19   ( -69.61, -80.92) 06/04/2021   05:22:24  ( -69.64, -80.95)    2.73                55
 06/06/2021   19:58:31   ( -70.76,  58.60) 06/06/2021   19:59:37  ( -70.70,  61.18)   94.96                66
 06/06/2021   20:48:58   (  69.76,-132.51) 06/06/2021   20:49:19  (  69.77,-132.52)    0.97                21
 06/06/2021   21:39:39   ( -69.66,  34.95) 06/06/2021   21:38:49  ( -69.66,  34.97)    0.81                50
 06/09/2021   13:05:16   (  69.76, -16.58) 06/09/2021   13:05:43  (  69.78, -16.61)    2.70                27
 06/09/2021   13:55:57   ( -69.66, 150.89) 06/09/2021   13:55:13  ( -69.68, 150.88)    2.16                44
 06/12/2021   05:21:36   (  69.82,  99.28) 06/12/2021   05:22:08  (  69.79,  99.28)    3.09                32
 06/12/2021   06:12:17   ( -69.71, -93.25) 06/12/2021   06:11:38  ( -69.69, -93.22)    2.59                39