Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/16/2021   18:34:54   (   0.00, -75.14) (   0.07, -74.75)   43.88                80
 02/19/2021   06:37:25   (  -0.01, -75.17) (   0.06, -75.35)   21.63                80
 02/21/2021   18:37:26   (   0.02, -75.20) (  -0.18, -75.99)   90.31                80
 02/22/2021   18:21:10   (   0.02, -75.21) (   0.89, -71.41)  433.82                80
 02/24/2021   06:42:37   (  -0.02, -75.23) (   0.31, -76.58)  154.46                80
 02/25/2021   06:21:00   (  -0.03, -75.25) (  -0.76, -72.01)  369.73                80
 02/26/2021   18:42:38   (   0.03, -75.27) (  -0.41, -77.22)  222.41                80
 02/27/2021   18:26:20   (   0.03, -75.29) (   0.60, -72.63)  302.44                80
 03/01/2021   06:47:48   (  -0.03, -75.32) (   0.54, -77.82)  284.37                80