Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 6 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/25/2021   06:44:49   (  -0.05, -75.13) (   0.33, -76.97)  209.25                80
 06/26/2021   06:28:30   (  -0.05, -75.10) (  -0.66, -72.37)  311.21                80
 06/27/2021   18:47:26   (   0.06, -75.07) (  -0.53, -77.58)  287.35                80
 06/28/2021   18:31:09   (   0.05, -75.05) (   0.52, -73.00)  233.91                80
 06/30/2021   06:49:56   (  -0.06, -75.03) (   0.62, -78.17)  357.96                80
 07/01/2021   06:33:38   (  -0.06, -75.01) (  -0.37, -73.57)  163.69                80
 07/02/2021   18:52:34   (   0.07, -74.99) (  -0.81, -78.78)  433.54                80
 07/03/2021   18:36:17   (   0.06, -74.98) (   0.24, -74.20)   88.63                80
 07/06/2021   06:36:05   (  -0.07, -74.96) (  -0.09, -74.78)   20.54                80