Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 6 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/21/2020   06:43:01   (   0.01, -75.20) (   0.54, -77.70)  284.91                80
 06/22/2020   06:21:24   (   0.00, -75.20) (  -0.46, -73.12)  236.93                80
 06/23/2020   18:43:04   (  -0.00, -75.20) (  -0.70, -78.35)  358.43                80
 06/24/2020   18:26:47   (  -0.00, -75.21) (   0.31, -73.77)  163.89                80
 06/26/2020   06:48:16   (   0.01, -75.21) (   0.87, -78.95)  427.18                80
 06/27/2020   06:26:41   (   0.01, -75.22) (  -0.19, -74.38)   95.46                80
 06/28/2020   18:48:19   (  -0.01, -75.23) (  -1.02, -79.60)  498.82                80
 06/29/2020   18:32:04   (  -0.01, -75.24) (   0.05, -75.03)   24.16                80
 07/02/2020   06:34:38   (  -0.01, -75.27) (   0.07, -75.65)   43.07                80
 07/03/2020   06:13:01   (  -0.01, -75.28) (  -0.93, -71.06)  480.09                80
 07/04/2020   18:34:40   (   0.01, -75.30) (  -0.21, -76.30)  113.27                80