Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/17/2021   06:30:04   (  -0.07, -75.19) (  -0.67, -72.61)  294.10                80
 07/18/2021   18:49:01   (   0.08, -75.21) (  -0.50, -77.83)  298.32                80
 07/19/2021   18:32:43   (   0.08, -75.22) (   0.56, -73.24)  226.02                80
 07/21/2021   06:54:10   (  -0.10, -75.23) (   0.59, -78.42)  362.58                80
 07/22/2021   06:35:12   (  -0.10, -75.24) (  -0.40, -73.82)  161.69                80
 07/23/2021   18:54:08   (   0.11, -75.26) (  -0.75, -79.03)  430.46                80
 07/24/2021   18:37:51   (   0.11, -75.27) (   0.30, -74.45)   94.52                80
 07/26/2021   06:59:18   (  -0.12, -75.30) (   0.86, -79.62)  492.35                80
 07/27/2021   06:40:21   (  -0.11, -75.32) (  -0.20, -75.04)   33.13                80
 07/29/2021   18:40:19   (   0.12, -75.38) (   0.06, -75.66)   31.31                80
 07/30/2021   18:24:01   (   0.11, -75.41) (   1.11, -71.07)  494.93                80