Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 12 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/11/2021   06:52:00   (  -0.02, -75.19) (   0.48, -77.43)  255.29                80
 12/12/2021   06:36:17   (  -0.01, -75.20) (  -0.51, -72.98)  252.46                80
 12/13/2021   18:56:09   (   0.02, -75.22) (  -0.69, -78.42)  364.86                80
 12/14/2021   18:40:26   (   0.01, -75.23) (   0.31, -73.97)  143.43                80
 12/16/2021   07:02:48   (  -0.01, -75.25) (   0.89, -79.37)  469.18                80
 12/17/2021   06:44:25   (  -0.01, -75.26) (  -0.11, -74.92)   39.31                80
 12/19/2021   18:45:53   (  -0.00, -75.30) (  -0.14, -75.90)   68.76                80
 12/20/2021   18:30:10   (  -0.01, -75.31) (   0.85, -71.45)  440.00                80
 12/22/2021   06:52:32   (   0.01, -75.34) (   0.35, -76.84)  171.75                80
 12/23/2021   06:31:29   (   0.01, -75.36) (  -0.65, -72.40)  337.15                80
 12/24/2021   18:54:00   (  -0.01, -75.39) (  -0.58, -77.82)  278.48                80