Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 2 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)
 02/03/2021   12:54:50   (  69.30, -14.11) 02/03/2021   12:55:16  (  69.32, -14.12)    2.86                26
 02/03/2021   13:45:31   ( -69.21, 153.34) 02/03/2021   13:44:46  ( -69.21, 153.37)    1.24                45
 02/06/2021   05:11:10   (  69.31, 101.80) 02/06/2021   05:11:42  (  69.33, 101.77)    2.00                32
 02/06/2021   06:01:51   ( -69.22, -90.75) 02/06/2021   06:01:12  ( -69.22, -90.73)    0.67                39
 02/08/2021   21:27:31   (  69.33,-142.30) 02/08/2021   21:28:09  (  69.33,-142.34)    1.62                38
 02/08/2021   22:18:12   ( -69.23,  25.17) 02/08/2021   22:17:39  ( -69.23,  25.16)    0.48                33
 02/11/2021   13:43:52   (  69.35, -26.40) 02/11/2021   13:44:36  (  69.33, -26.46)    3.49                44
 02/11/2021   14:34:33   ( -69.24, 141.07) 02/11/2021   14:34:06  ( -69.23, 141.04)    2.28                27
 02/14/2021   06:00:13   (  69.37,  89.50) 02/14/2021   06:01:02  (  69.38,  89.49)    0.84                49
 02/14/2021   06:50:54   ( -69.26,-103.02) 02/14/2021   06:50:32  ( -69.28,-103.01)    2.16                22
 02/14/2021   07:41:21   (  68.25,  65.66) 02/14/2021   07:40:14  (  68.32,  63.43)   91.87                67