Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/20/2021   18:25:31   (   0.13, -75.20) (   1.04, -71.27)  448.01                80
 08/22/2021   06:46:58   (  -0.14, -75.20) (   0.14, -76.44)  141.48                80
 08/23/2021   06:25:20   (  -0.14, -75.20) (  -0.92, -71.86)  381.94                80
 08/24/2021   18:46:55   (   0.14, -75.20) (  -0.30, -77.05)  211.73                80
 08/25/2021   18:30:37   (   0.14, -75.21) (   0.76, -72.47)  312.41                80
 08/27/2021   06:52:05   (  -0.15, -75.23) (   0.42, -77.64)  275.23                80
 08/28/2021   06:30:27   (  -0.14, -75.24) (  -0.64, -73.06)  249.01                80
 08/29/2021   18:52:02   (   0.15, -75.25) (  -0.52, -78.27)  343.93                80
 08/30/2021   18:35:44   (   0.15, -75.26) (   0.49, -73.67)  180.61                80
 09/01/2021   06:57:12   (  -0.16, -75.29) (   0.64, -78.85)  406.22                80
 09/02/2021   06:35:35   (  -0.16, -75.30) (  -0.42, -74.27)  118.34                80