Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/06/2021   06:36:58   (  -0.06, -75.13) (  -0.15, -74.79)   38.74                28
 07/08/2021   18:38:45   (   0.07, -75.21) (   0.02, -75.42)   23.94                80
 07/11/2021   06:43:55   (  -0.08, -75.26) (   0.07, -76.01)   85.05                80
 07/12/2021   06:24:57   (  -0.08, -75.29) (  -0.92, -71.41)  441.20                80
 07/13/2021   18:43:54   (   0.09, -75.35) (  -0.18, -76.63)  146.51                80
 07/14/2021   18:27:35   (   0.08, -75.38) (   0.81, -72.04)  380.38                80
 07/16/2021   06:49:03   (  -0.09, -75.42) (   0.34, -77.21)  205.42                80
 07/17/2021   06:28:15   (  -0.09, -75.45) (  -0.71, -72.63)  321.50                30
 07/18/2021   18:49:01   (   0.10, -75.52) (  -0.44, -77.84)  265.73                80
 07/19/2021   18:32:44   (   0.10, -75.55) (   0.62, -73.26)  261.46                80