Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/27/2021   06:37:39   (  -0.10, -75.20) (  -0.12, -75.02)   20.51                80
 07/29/2021   18:40:18   (   0.11, -75.20) (   0.02, -75.65)   50.26                80
 07/30/2021   18:24:00   (   0.10, -75.21) (   1.02, -71.05)  473.51                80
 08/01/2021   06:45:28   (  -0.12, -75.22) (   0.09, -76.24)  115.69                80
 08/02/2021   06:26:29   (  -0.11, -75.22) (  -0.90, -71.64)  408.05                80
 08/03/2021   18:45:26   (   0.13, -75.23) (  -0.23, -76.85)  185.26                80
 08/04/2021   18:29:08   (   0.13, -75.24) (   0.82, -72.27)  338.82                80
 08/06/2021   06:50:36   (  -0.14, -75.25) (   0.36, -77.44)  249.58                80
 08/07/2021   06:31:38   (  -0.14, -75.26) (  -0.70, -72.86)  274.54                80
 08/08/2021   18:50:33   (   0.15, -75.27) (  -0.48, -78.06)  318.28                80