Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/24/2021   18:37:50   (   0.10, -75.21) (   0.27, -74.44)   87.85                80
 07/27/2021   06:40:20   (  -0.11, -75.23) (  -0.17, -75.03)   23.76                80
 07/29/2021   18:40:18   (   0.11, -75.27) (   0.02, -75.65)   43.34                80
 07/30/2021   18:24:00   (   0.11, -75.28) (   1.08, -71.06)  481.85                80
 08/01/2021   06:45:28   (  -0.12, -75.31) (   0.08, -76.24)  104.99                80
 08/02/2021   06:23:50   (  -0.12, -75.33) (  -0.97, -71.65)  420.16                80
 08/03/2021   18:45:25   (   0.13, -75.36) (  -0.21, -76.86)  171.13                80
 08/04/2021   18:29:08   (   0.13, -75.38) (   0.85, -72.27)  354.40                80
 08/06/2021   06:50:35   (  -0.14, -75.42) (   0.33, -77.45)  231.60                80