Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 12 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/28/2019   18:14:21   (  -0.02, -75.20) (   0.76, -71.76)  391.86                80
 12/30/2019   06:38:32   (   0.02, -75.20) (   0.40, -76.97)  200.51                80
 12/31/2019   06:16:57   (   0.01, -75.21) (  -0.62, -72.39)  321.72                80
 01/01/2020   18:41:16   (  -0.02, -75.23) (  -0.55, -77.62)  272.44                80
 01/02/2020   18:19:41   (  -0.01, -75.24) (   0.48, -73.05)  250.25                80
 01/04/2020   06:43:52   (   0.02, -75.26) (   0.68, -78.25)  340.64                80
 01/05/2020   06:22:17   (   0.02, -75.27) (  -0.35, -73.68)  182.32                80
 01/06/2020   18:46:36   (  -0.03, -75.30) (  -0.82, -78.91)  410.98                80
 01/07/2020   18:25:00   (  -0.02, -75.32) (   0.20, -74.34)  112.15                80
 01/09/2020   06:49:12   (   0.03, -75.34) (   0.95, -79.54)  478.16                80
 01/10/2020   06:27:36   (   0.03, -75.35) (  -0.08, -74.96)   45.03                80