Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/22/2021   18:42:12   (  -0.03, -75.20) (  -0.05, -75.17)    3.62                80
 11/25/2021   06:49:14   (   0.02, -75.21) (   0.27, -76.22)  115.67                80
 11/26/2021   06:28:25   (   0.02, -75.21) (  -0.77, -71.83)  386.11                80
 11/27/2021   18:51:17   (  -0.02, -75.23) (  -0.51, -77.34)  241.78                80
 11/28/2021   18:35:52   (  -0.02, -75.24) (   0.51, -72.97)  258.53                80
 11/30/2021   06:58:41   (   0.01, -75.25) (   0.75, -78.47)  367.66                80
 12/01/2021   06:37:59   (   0.01, -75.26) (  -0.23, -74.11)  130.74                80
 12/03/2021   18:43:08   (  -0.01, -75.29) (  -0.05, -75.34)    6.94                80