Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 12 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/25/2019   06:33:13   (   0.02, -75.19) (   0.11, -75.68)   55.59                80
 12/26/2019   06:11:37   (   0.01, -75.20) (  -0.91, -71.11)  466.23                80
 12/27/2019   18:35:57   (  -0.01, -75.21) (  -0.25, -76.34)  128.59                80
 12/28/2019   18:14:21   (  -0.00, -75.22) (   0.77, -71.77)  393.64                80
 12/30/2019   06:38:33   (   0.00, -75.23) (   0.39, -76.97)  198.24                80
 12/31/2019   06:16:57   (  -0.00, -75.24) (  -0.64, -72.39)  324.42                80
 01/01/2020   18:41:16   (   0.00, -75.27) (  -0.53, -77.63)  268.98                80
 01/02/2020   18:19:41   (   0.01, -75.29) (   0.50, -73.05)  254.20                80
 01/04/2020   06:43:52   (  -0.00, -75.31) (   0.66, -78.26)  336.10                80
 01/05/2020   06:22:17   (  -0.01, -75.33) (  -0.37, -73.68)  187.34                80