Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 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)
 12/20/2020   18:34:36   (   0.01, -75.17) (   0.05, -75.00)   19.55                80
 12/23/2020   06:37:09   (  -0.01, -75.19) (   0.07, -75.61)   46.84                80
 12/24/2020   06:15:32   (  -0.00, -75.20) (  -0.92, -71.01)  477.01                80
 12/25/2020   18:37:09   (  -0.00, -75.23) (  -0.22, -76.24)  115.06                80
 12/26/2020   18:20:52   (  -0.01, -75.24) (   0.78, -71.65)  409.16                80
 12/28/2020   06:42:21   (   0.01, -75.26) (   0.39, -76.83)  179.71                80
 12/29/2020   06:20:44   (   0.01, -75.28) (  -0.66, -72.25)  344.35                80
 12/30/2020   18:42:22   (  -0.01, -75.30) (  -0.48, -77.48)  247.76                80
 12/31/2020   18:26:04   (  -0.01, -75.32) (   0.52, -72.88)  276.68                80