Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 9 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/13/2020   06:51:27   (  -0.04, -75.17) (   0.96, -79.48)  492.20                80
 09/14/2020   06:29:51   (  -0.04, -75.17) (  -0.12, -74.91)   30.01                80
 09/16/2020   18:32:33   (   0.04, -75.19) (  -0.02, -75.56)   41.21                80
 09/17/2020   18:16:16   (   0.04, -75.20) (   1.00, -70.97)  481.60                80
 09/19/2020   06:37:46   (  -0.05, -75.19) (   0.18, -76.16)  110.55                80
 09/20/2020   06:16:09   (  -0.04, -75.20) (  -0.84, -71.58)  412.42                80
 09/21/2020   18:37:48   (   0.05, -75.23) (  -0.32, -76.81)  180.21                80
 09/22/2020   18:21:31   (   0.05, -75.24) (   0.70, -72.22)  342.99                80
 09/24/2020   06:43:01   (  -0.05, -75.24) (   0.42, -77.42)  248.45                80
 09/25/2020   06:21:25   (  -0.06, -75.25) (  -0.60, -72.84)  274.89                80
 09/26/2020   18:43:03   (   0.06, -75.29) (  -0.57, -78.07)  317.04                80