Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 7 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/15/2020   18:28:55   (   0.01, -75.20) (   0.20, -74.22)  111.65                80
 07/17/2020   06:50:25   (  -0.01, -75.20) (   0.94, -79.41)  480.81                80
 07/18/2020   06:28:49   (  -0.01, -75.20) (  -0.07, -74.83)   41.35                80
 07/20/2020   18:31:31   (   0.01, -75.21) (  -0.03, -75.49)   31.16                80
 07/21/2020   18:15:15   (   0.01, -75.21) (   0.99, -70.90)  491.56                80
 07/23/2020   06:34:04   (  -0.01, -75.22) (   0.22, -76.09)  100.00                80
 07/24/2020   06:17:49   (   0.00, -75.22) (  -0.85, -71.52)  422.97                80
 07/25/2020   18:36:47   (   0.00, -75.24) (  -0.31, -76.74)  170.60                80
 07/26/2020   18:20:31   (  -0.00, -75.25) (   0.71, -72.16)  352.79                80
 07/28/2020   06:42:01   (  -0.00, -75.27) (   0.45, -77.36)  237.76                80