Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/17/2021   18:36:11   (  -0.02, -75.19) (   0.47, -73.12)  237.56                80
 11/19/2021   06:57:37   (   0.02, -75.19) (   0.72, -78.27)  351.28                80
 11/20/2021   06:35:58   (   0.02, -75.19) (  -0.31, -73.68)  172.41                80
 11/21/2021   18:57:33   (  -0.02, -75.20) (  -0.84, -78.89)  420.16                80
 11/22/2021   18:41:15   (  -0.02, -75.20) (   0.20, -74.29)  103.88                80
 11/24/2021   07:02:40   (   0.02, -75.21) (   1.00, -79.45)  484.16                80
 11/25/2021   06:41:02   (   0.02, -75.22) (  -0.03, -74.86)   40.06                80
 11/27/2021   18:46:19   (  -0.02, -75.24) (  -0.06, -75.48)   27.12                80
 11/28/2021   18:24:40   (  -0.01, -75.25) (   0.98, -70.88)  497.74                80
 11/30/2021   06:48:46   (   0.02, -75.27) (   0.17, -76.05)   88.88                80