Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 4 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2021   06:42:37   (  -0.02, -75.18) (   0.24, -76.22)  119.21                80
 04/24/2021   06:21:01   (  -0.02, -75.18) (  -0.85, -71.65)  403.82                80
 04/25/2021   18:42:36   (   0.02, -75.18) (  -0.36, -76.85)  190.52                80
 04/26/2021   18:26:19   (   0.02, -75.18) (   0.67, -72.26)  332.90                80
 04/28/2021   06:47:47   (  -0.02, -75.20) (   0.50, -77.44)  255.48                80
 04/29/2021   06:26:09   (  -0.02, -75.21) (  -0.53, -72.85)  267.86                80
 04/30/2021   18:47:46   (   0.02, -75.20) (  -0.62, -78.07)  326.32                80
 05/01/2021   18:31:28   (   0.02, -75.21) (   0.41, -73.48)  197.49                80
 05/03/2021   06:52:56   (  -0.01, -75.24) (   0.76, -78.66)  389.76                80
 05/04/2021   06:31:19   (  -0.01, -75.25) (  -0.27, -74.07)  134.38                80
 05/05/2021   18:52:54   (   0.01, -75.26) (  -0.93, -79.27)  458.60                80