Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 7 1.  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)
 07/03/2021   15:32:22   (  70.72, -54.61) 07/03/2021   15:33:29  (  70.66, -52.45)   79.65                67
 07/03/2021   16:22:49   ( -69.87, 114.06) 07/03/2021   16:23:11  ( -69.89, 114.07)    2.05                22
 07/03/2021   17:13:33   (  69.78, -78.50) 07/03/2021   17:12:38  (  69.78, -78.44)    2.26                55
 07/06/2021   08:39:07   ( -69.88,-130.02) 07/06/2021   08:39:36  ( -69.90,-130.04)    2.10                29
 07/06/2021   09:29:51   (  69.80,  37.42) 07/06/2021   09:29:03  (  69.79,  37.45)    1.85                48
 07/09/2021   00:55:26   ( -69.90, -14.10) 07/09/2021   00:56:02  ( -69.90, -14.15)    2.29                36
 07/09/2021   01:46:10   (  69.82, 153.33) 07/09/2021   01:45:29  (  69.79, 153.34)    3.32                41
 07/11/2021   17:11:46   ( -69.96, 101.74) 07/11/2021   17:12:27  ( -69.96, 101.81)    2.61                41
 07/11/2021   18:02:29   (  69.84, -90.76) 07/11/2021   18:01:54  (  69.84, -90.71)    2.16                35
 07/14/2021   09:28:05   ( -69.98,-142.34) 07/14/2021   09:28:53  ( -69.96,-142.32)    3.17                48
 07/14/2021   10:18:47   (  69.81,  25.22) 07/14/2021   10:18:20  (  69.84,  25.17)    3.24                27