Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/29/2021   06:56:18   (  -0.01, -75.22) (   0.66, -78.14)  333.26                80
 10/30/2021   06:34:41   (  -0.02, -75.23) (  -0.42, -73.56)  190.95                80
 10/31/2021   18:56:16   (   0.01, -75.25) (  -0.77, -78.76)  399.82                80
 11/01/2021   18:39:57   (   0.01, -75.27) (   0.25, -74.17)  125.00                80
 11/03/2021   07:01:24   (  -0.01, -75.28) (   0.89, -79.34)  462.34                80
 11/04/2021   06:39:45   (  -0.00, -75.29) (  -0.14, -74.75)   62.57                80
 11/06/2021   18:45:02   (  -0.01, -75.33) (  -0.02, -75.35)    2.58                80
 11/09/2021   06:47:30   (   0.01, -75.37) (   0.14, -75.93)   64.35                80
 11/10/2021   06:25:51   (   0.01, -75.38) (  -0.89, -71.34)  460.72                80
 11/11/2021   18:50:07   (  -0.01, -75.42) (  -0.28, -76.54)  128.66                80