Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/07/2020   06:40:28   (   0.00, -75.17) (   0.28, -76.48)  149.57                80
 12/08/2020   06:18:51   (   0.00, -75.16) (  -0.70, -71.89)  372.00                80
 12/09/2020   18:40:28   (  -0.00, -75.16) (  -0.45, -77.11)  223.02                80
 12/10/2020   18:24:12   (  -0.00, -75.15) (   0.60, -72.53)  299.04                80
 12/12/2020   06:45:41   (   0.00, -75.14) (   0.58, -77.72)  293.37                80
 12/13/2020   06:24:04   (   0.00, -75.14) (  -0.47, -73.14)  228.62                80
 12/14/2020   18:45:41   (  -0.00, -75.14) (  -0.74, -78.35)  366.16                80
 12/15/2020   18:29:24   (  -0.01, -75.14) (   0.31, -73.77)  156.35                80
 12/17/2020   06:50:53   (   0.01, -75.14) (   0.87, -78.95)  434.79                80
 12/18/2020   06:29:17   (   0.02, -75.14) (  -0.18, -74.37)   87.99                80