Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/19/2021   06:58:53   (   0.01, -75.19) (   0.80, -78.58)  387.22                80
 11/20/2021   06:37:53   (   0.02, -75.19) (  -0.21, -74.15)  118.97                80
 11/22/2021   18:44:53   (  -0.03, -75.20) (  -0.04, -75.17)    3.51                80
 11/25/2021   06:49:14   (   0.03, -75.21) (   0.27, -76.22)  115.07                80
 11/26/2021   06:28:24   (   0.03, -75.22) (  -0.71, -71.82)  386.79                80
 11/27/2021   18:51:17   (  -0.03, -75.23) (  -0.50, -77.34)  241.03                80
 11/28/2021   18:35:52   (  -0.03, -75.24) (   0.51, -72.97)  259.36                80
 11/30/2021   06:58:41   (   0.03, -75.26) (   0.75, -78.47)  366.50                80
 12/01/2021   06:38:00   (   0.03, -75.27) (  -0.24, -74.11)  131.98                80