Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/24/2021   18:46:55   (   0.14, -75.19) (  -0.30, -77.05)  212.81                80
 08/25/2021   18:30:37   (   0.13, -75.18) (   0.76, -72.47)  309.64                80
 08/27/2021   06:52:05   (  -0.14, -75.18) (   0.42, -77.64)  281.08                80
 08/28/2021   06:30:27   (  -0.14, -75.17) (  -0.64, -73.06)  241.49                80
 08/29/2021   18:52:01   (   0.14, -75.16) (  -0.57, -78.25)  353.52                80
 08/30/2021   18:35:44   (   0.15, -75.15) (   0.49, -73.67)  169.33                80
 09/01/2021   06:57:11   (  -0.15, -75.15) (   0.69, -78.84)  420.57                80
 09/02/2021   06:35:34   (  -0.15, -75.15) (  -0.37, -74.26)  102.28                80
 09/03/2021   18:57:09   (   0.16, -75.14) (  -0.78, -79.47)  492.31                80
 09/04/2021   18:40:51   (   0.16, -75.14) (   0.22, -74.87)   31.00                80