Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/04/2020   18:35:15   (  -0.01, -75.20) (  -0.18, -75.87)   77.31                80
 12/05/2020   18:18:58   (  -0.01, -75.20) (   0.86, -71.29)  445.80                80
 12/07/2020   06:40:28   (   0.01, -75.21) (   0.30, -76.48)  145.34                80
 12/08/2020   06:18:51   (   0.01, -75.21) (  -0.74, -71.90)  377.79                80
 12/09/2020   18:40:29   (  -0.01, -75.23) (  -0.41, -77.12)  214.74                80
 12/10/2020   18:24:11   (  -0.02, -75.24) (   0.58, -72.53)  309.02                80
 12/12/2020   06:45:40   (   0.02, -75.26) (   0.59, -77.72)  280.80                80
 12/13/2020   06:24:04   (   0.02, -75.27) (  -0.46, -73.14)  242.85                80
 12/14/2020   18:45:40   (  -0.03, -75.29) (  -0.75, -78.35)  349.36                80
 12/15/2020   18:29:24   (  -0.03, -75.30) (   0.31, -73.77)  174.81                80
 12/17/2020   06:50:53   (   0.04, -75.33) (   0.87, -78.95)  413.78                80