Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/15/2021   18:39:00   (  -0.00, -75.19) (  -0.31, -76.57)  156.79                80
 01/16/2021   18:22:44   (   0.01, -75.20) (   0.75, -71.99)  366.47                80
 01/18/2021   06:44:12   (  -0.01, -75.21) (   0.43, -77.17)  223.42                80
 01/19/2021   06:22:35   (  -0.01, -75.22) (  -0.63, -72.59)  300.24                80
 01/20/2021   18:44:13   (   0.01, -75.25) (  -0.54, -77.81)  291.83                80
 01/21/2021   18:27:55   (   0.01, -75.26) (   0.47, -73.22)  232.46                80
 01/23/2021   06:49:23   (   0.00, -75.28) (   0.71, -78.40)  355.69                80
 01/24/2021   06:27:46   (   0.01, -75.30) (  -0.30, -73.81)  168.73                80
 01/25/2021   18:49:23   (  -0.01, -75.32) (  -0.87, -79.03)  423.13                80
 01/26/2021   18:33:07   (  -0.01, -75.34) (   0.19, -74.45)  101.39                80
 01/28/2021   06:54:35   (   0.01, -75.37) (   0.98, -79.63)  486.23                80