Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 9 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/20/2020   06:16:09   (  -0.02, -75.20) (  -0.82, -71.57)  413.88                80
 09/21/2020   18:37:47   (   0.03, -75.23) (  -0.35, -76.79)  179.28                80
 09/22/2020   18:21:31   (   0.03, -75.24) (   0.73, -72.23)  343.82                80
 09/24/2020   06:43:01   (  -0.03, -75.24) (   0.44, -77.41)  247.42                80
 09/25/2020   06:21:24   (  -0.04, -75.25) (  -0.59, -72.83)  275.84                80
 09/26/2020   18:43:03   (   0.04, -75.28) (  -0.59, -78.06)  316.56                80
 09/27/2020   18:26:46   (   0.04, -75.30) (   0.44, -73.48)  207.33                80
 09/29/2020   06:48:15   (  -0.05, -75.32) (   0.73, -78.67)  382.14                80
 09/30/2020   06:26:39   (  -0.05, -75.34) (  -0.30, -74.08)  142.26                80
 10/01/2020   18:48:18   (   0.05, -75.38) (  -0.81, -79.32)  448.63                80
 10/02/2020   18:32:02   (   0.05, -75.41) (   0.21, -74.74)   76.28                80