Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 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)
 11/20/2021   06:37:53   (   0.03, -75.19) (  -0.20, -74.14)  119.17                80
 11/22/2021   18:44:53   (  -0.03, -75.20) (   0.00, -75.19)    3.71                80
 11/25/2021   06:49:14   (   0.02, -75.20) (   0.28, -76.21)  115.97                80
 11/26/2021   06:28:25   (   0.02, -75.21) (  -0.76, -71.83)  385.78                80
 11/27/2021   18:51:17   (  -0.01, -75.22) (  -0.51, -77.34)  242.17                80
 11/28/2021   18:35:52   (  -0.01, -75.23) (   0.50, -72.97)  258.09                80
 11/30/2021   06:58:41   (   0.01, -75.25) (   0.76, -78.47)  368.17                80
 12/01/2021   06:37:59   (   0.01, -75.26) (  -0.23, -74.11)  130.20                80
 12/03/2021   18:43:09   (  -0.01, -75.29) (   0.00, -75.35)    7.57                80