Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2020   06:50:53   (   0.01, -75.15) (   0.86, -78.95)  432.89                80
 12/18/2020   06:29:16   (   0.01, -75.15) (  -0.19, -74.37)   89.80                80
 12/20/2020   18:34:36   (  -0.01, -75.17) (   0.03, -75.00)   19.91                80
 12/23/2020   06:37:09   (   0.01, -75.19) (   0.08, -75.60)   46.36                80
 12/24/2020   06:15:32   (   0.01, -75.21) (  -0.91, -71.01)  477.46                80
 12/25/2020   18:37:09   (  -0.00, -75.23) (  -0.24, -76.23)  114.46                80
 12/26/2020   18:20:52   (  -0.00, -75.25) (   0.82, -71.66)  409.70                80
 12/28/2020   06:42:22   (  -0.00, -75.27) (   0.35, -76.84)  179.29                80
 12/29/2020   06:20:45   (  -0.01, -75.28) (  -0.70, -72.26)  344.78                80
 12/30/2020   18:42:22   (   0.01, -75.31) (  -0.50, -77.47)  246.99                80