Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 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)
 10/20/2021   06:24:30   (  -0.04, -75.19) (  -0.92, -71.18)  456.94                80
 10/21/2021   18:48:46   (   0.03, -75.20) (  -0.21, -76.40)  135.81                80
 10/22/2021   18:27:08   (   0.04, -75.20) (   0.81, -71.80)  388.02                80
 10/24/2021   06:51:13   (  -0.03, -75.21) (   0.39, -76.96)  200.29                80
 10/25/2021   06:29:36   (  -0.03, -75.21) (  -0.69, -72.38)  323.50                80
 10/26/2021   18:53:51   (   0.02, -75.22) (  -0.50, -77.58)  268.88                80
 10/27/2021   18:32:12   (   0.03, -75.23) (   0.53, -72.99)  255.23                80
 10/29/2021   06:56:19   (  -0.02, -75.24) (   0.61, -78.16)  332.18                80
 10/30/2021   06:34:40   (  -0.03, -75.25) (  -0.42, -73.57)  192.10                80
 10/31/2021   18:58:55   (   0.02, -75.26) (  -0.76, -78.77)  399.41                80
 11/01/2021   18:37:17   (   0.02, -75.28) (   0.27, -74.18)  125.43                80