Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 6 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/26/2021   06:25:50   (  -0.05, -75.14) (  -0.66, -72.37)  315.54                80
 06/27/2021   18:47:27   (   0.05, -75.15) (  -0.47, -77.59)  278.46                80
 06/28/2021   18:31:09   (   0.05, -75.15) (   0.52, -73.00)  245.18                80
 06/30/2021   06:52:36   (  -0.06, -75.16) (   0.62, -78.17)  344.00                80
 07/01/2021   06:33:39   (  -0.05, -75.16) (  -0.43, -73.59)  179.98                80
 07/02/2021   18:52:35   (   0.06, -75.18) (  -0.75, -78.80)  412.77                80
 07/03/2021   18:36:18   (   0.06, -75.19) (   0.30, -74.21)  111.77                80
 07/05/2021   06:57:45   (  -0.07, -75.21) (   0.84, -79.39)  475.99                80
 07/06/2021   06:36:06   (  -0.07, -75.22) (  -0.15, -74.79)   48.52                80
 07/08/2021   18:38:45   (   0.08, -75.25) (   0.03, -75.42)   19.18                80