Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 2 2.  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   12:54:51   (  69.34, -14.18) 02/03/2021   12:55:16  (  69.33, -14.11)    3.29                25
 02/03/2021   13:45:30   ( -69.20, 153.35) 02/03/2021   13:44:45  ( -69.21, 153.37)    1.73                45
 02/06/2021   05:11:10   (  69.31, 101.81) 02/06/2021   05:11:42  (  69.33, 101.78)    3.09                32
 02/06/2021   06:01:51   ( -69.21, -90.74) 02/06/2021   06:01:12  ( -69.23, -90.73)    1.49                39
 02/08/2021   21:27:31   (  69.32,-142.29) 02/08/2021   21:28:09  (  69.34,-142.34)    2.28                38
 02/08/2021   22:18:12   ( -69.22,  25.18) 02/08/2021   22:17:39  ( -69.23,  25.16)    1.07                33
 02/11/2021   13:43:52   (  69.34, -26.38) 02/11/2021   13:44:36  (  69.33, -26.46)    2.96                44
 02/11/2021   14:34:33   ( -69.24, 141.09) 02/11/2021   14:34:06  ( -69.23, 141.04)    1.78                27
 02/14/2021   06:00:12   (  69.36,  89.52) 02/14/2021   06:01:01  (  69.38,  89.49)    2.65                49
 02/14/2021   06:50:54   ( -69.30,-103.08) 02/14/2021   06:50:31  ( -69.28,-103.01)    3.39                23
 02/14/2021   07:41:20   (  68.24,  65.67) 02/14/2021   07:40:14  (  68.27,  63.37)   94.91                66