Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/10/2021   06:25:50   (   0.01, -75.19) (  -0.86, -71.32)  440.53                80
 11/11/2021   18:50:05   (  -0.01, -75.19) (  -0.31, -76.52)  152.46                80
 11/12/2021   18:28:27   (  -0.00, -75.19) (   0.72, -71.93)  371.49                80
 11/14/2021   06:52:33   (   0.01, -75.20) (   0.41, -77.10)  216.26                80
 11/15/2021   06:30:55   (   0.01, -75.21) (  -0.62, -72.51)  308.23                80
 11/16/2021   18:55:09   (  -0.02, -75.23) (  -0.60, -77.70)  282.95                80
 11/17/2021   18:33:31   (  -0.02, -75.24) (   0.44, -73.11)  242.07                80
 11/19/2021   06:57:37   (   0.03, -75.26) (   0.70, -78.28)  344.41                80
 11/20/2021   06:35:58   (   0.02, -75.27) (  -0.33, -73.69)  180.58                80
 11/21/2021   19:00:14   (  -0.03, -75.29) (  -0.81, -78.90)  410.04                80
 11/22/2021   18:38:35   (  -0.03, -75.31) (   0.23, -74.30)  115.27                80