Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/19/2021   06:46:09   (  -0.04, -75.19) (   0.07, -75.78)   66.51                80
 10/20/2021   06:24:30   (  -0.04, -75.19) (  -0.95, -71.19)  456.91                80
 10/21/2021   18:48:46   (   0.03, -75.20) (  -0.25, -76.39)  135.87                80
 10/22/2021   18:27:07   (   0.04, -75.20) (   0.78, -71.79)  387.97                80
 10/24/2021   06:51:13   (  -0.03, -75.21) (   0.37, -76.97)  200.24                80
 10/25/2021   06:29:35   (  -0.03, -75.21) (  -0.66, -72.37)  323.54                80
 10/26/2021   18:53:50   (   0.02, -75.22) (  -0.53, -77.57)  268.88                80
 10/27/2021   18:32:13   (   0.03, -75.23) (   0.55, -72.99)  255.25                80
 10/29/2021   06:56:18   (  -0.02, -75.24) (   0.65, -78.15)  332.08                80
 10/30/2021   06:34:40   (  -0.03, -75.25) (  -0.38, -73.56)  192.22                80
 10/31/2021   18:58:56   (   0.02, -75.26) (  -0.74, -78.77)  399.37                80
 11/01/2021   18:37:18   (   0.02, -75.28) (   0.28, -74.18)  125.50                80