Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 1 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)
 01/13/2020   18:11:23   (  -0.04, -75.20) (   0.88, -71.02)  475.54                80
 01/15/2020   06:35:35   (   0.05, -75.19) (   0.25, -76.23)  117.46                80
 01/16/2020   06:13:58   (   0.04, -75.19) (  -0.72, -71.64)  403.89                80
 01/17/2020   18:38:18   (  -0.05, -75.19) (  -0.41, -76.89)  192.30                80
 01/18/2020   18:16:43   (  -0.05, -75.20) (   0.62, -72.31)  329.49                80
 01/20/2020   06:40:53   (   0.06, -75.20) (   0.57, -77.50)  262.13                80
 01/21/2020   06:19:18   (   0.06, -75.21) (  -0.46, -72.93)  259.79                80
 01/22/2020   18:43:37   (  -0.07, -75.22) (  -0.74, -78.16)  335.67                80
 01/23/2020   18:22:02   (  -0.07, -75.22) (   0.29, -73.58)  186.72                80
 01/25/2020   06:46:12   (   0.08, -75.24) (   0.89, -78.78)  403.55                80
 01/26/2020   06:24:36   (   0.08, -75.25) (  -0.15, -74.20)  119.16                80