Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 9 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/25/2021   18:39:38   (   0.10, -75.20) (   0.17, -75.05)   17.78                80
 09/28/2021   06:44:46   (  -0.11, -75.20) (   0.01, -75.62)   48.81                80
 09/29/2021   06:23:08   (  -0.11, -75.20) (  -1.06, -71.04)  474.65                80
 09/30/2021   18:47:23   (   0.11, -75.21) (  -0.12, -76.24)  117.71                80
 10/01/2021   18:25:46   (   0.12, -75.22) (   0.95, -71.66)  406.16                80
 10/03/2021   06:49:52   (  -0.11, -75.22) (   0.24, -76.82)  182.25                80
 10/04/2021   06:28:14   (  -0.12, -75.23) (  -0.78, -72.23)  341.83                80
 10/05/2021   18:52:29   (   0.11, -75.25) (  -0.40, -77.43)  249.62                80
 10/06/2021   18:30:52   (   0.12, -75.26) (   0.67, -72.85)  275.00                80
 10/08/2021   06:54:58   (  -0.11, -75.28) (   0.51, -78.02)  312.09                80