Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 9 22.  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)
 09/22/2021   03:04:11   (  70.22, 133.81) 09/22/2021   03:04:25  (  70.21, 133.82)    1.02                14
 09/22/2021   03:54:51   ( -70.07, -58.64) 09/22/2021   03:53:55  ( -70.09, -58.72)    3.49                56
 09/24/2021   19:20:29   (  70.23,-110.26) 09/24/2021   19:20:51  (  70.23,-110.28)    0.86                22
 09/24/2021   20:11:10   ( -70.14,  57.21) 09/24/2021   20:10:21  ( -70.11,  57.19)    2.40                49
 09/27/2021   11:36:46   (  70.24,   5.67) 09/27/2021   11:37:16  (  70.24,   5.61)    2.19                30
 09/27/2021   12:27:27   ( -70.15, 173.14) 09/27/2021   12:26:46  ( -70.13, 173.09)    2.65                41
 09/30/2021   03:53:05   (  70.31, 121.51) 09/30/2021   03:53:41  (  70.30, 121.58)    2.59                36
 09/30/2021   04:43:46   ( -70.21, -71.01) 09/30/2021   04:43:11  ( -70.19, -70.94)    3.24                35
 10/02/2021   20:09:23   (  70.32,-122.56) 10/02/2021   20:10:07  (  70.30,-122.55)    2.86                44
 10/02/2021   21:00:04   ( -70.22,  44.92) 10/02/2021   20:59:37  ( -70.19,  44.94)    3.23                27
 10/05/2021   12:25:41   (  70.34,  -6.64) 10/05/2021   12:26:32  (  70.34,  -6.60)    1.86                51
 10/05/2021   13:16:22   ( -70.24, 160.84) 10/05/2021   13:16:02  ( -70.24, 160.89)    2.10                20