Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 12 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/11/2019   18:36:13   (  -0.02, -75.19) (  -0.42, -77.07)  212.94                80
 12/12/2019   18:19:57   (  -0.02, -75.19) (   0.60, -72.49)  308.49                80
 12/14/2019   06:41:29   (   0.02, -75.19) (   0.58, -77.69)  284.79                80
 12/15/2019   06:19:53   (   0.01, -75.19) (  -0.44, -73.11)  236.42                80
 12/16/2019   18:41:32   (  -0.01, -75.19) (  -0.71, -78.35)  360.00                80
 12/17/2019   18:25:17   (   0.00, -75.20) (   0.31, -73.78)  161.66                80
 12/19/2019   06:46:48   (  -0.00, -75.20) (   0.87, -78.98)  430.47                80
 12/20/2019   06:25:14   (  -0.01, -75.21) (  -0.21, -74.41)   91.63                80
 12/22/2019   18:30:37   (   0.00, -75.23) (   0.03, -75.06)   19.20                80