Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 1 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)
 01/04/2020   06:43:52   (   0.03, -75.20) (   0.68, -78.25)  347.13                80
 01/05/2020   06:22:17   (   0.02, -75.20) (  -0.35, -73.67)  174.60                80
 01/06/2020   18:46:36   (  -0.03, -75.20) (  -0.83, -78.91)  421.30                80
 01/07/2020   18:25:00   (  -0.03, -75.21) (   0.19, -74.33)  100.64                80
 01/09/2020   06:49:11   (   0.04, -75.22) (   1.02, -79.52)  491.04                80
 01/10/2020   06:27:35   (   0.04, -75.22) (  -0.01, -74.95)   30.85                80
 01/12/2020   18:32:59   (  -0.04, -75.23) (  -0.15, -75.60)   42.74                80
 01/13/2020   18:11:24   (  -0.04, -75.24) (   0.88, -71.03)  479.59                80
 01/15/2020   06:35:35   (   0.05, -75.26) (   0.26, -76.23)  110.96                80
 01/16/2020   06:13:59   (   0.04, -75.27) (  -0.77, -71.66)  411.66                80
 01/17/2020   18:38:19   (  -0.05, -75.29) (  -0.42, -76.89)  182.66                80