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

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/12/2019   18:19:57   (  -0.02, -75.19) (   0.59, -72.49)  308.64                80
 12/14/2019   06:41:28   (   0.02, -75.19) (   0.60, -77.69)  284.75                80
 12/15/2019   06:19:54   (   0.01, -75.19) (  -0.48, -73.12)  236.47                80
 12/16/2019   18:41:32   (  -0.00, -75.19) (  -0.74, -78.35)  359.85                80
 12/17/2019   18:22:38   (   0.01, -75.20) (   0.35, -73.78)  161.90                80
 12/19/2019   06:46:49   (  -0.01, -75.21) (   0.84, -78.98)  430.20                80
 12/20/2019   06:25:14   (  -0.01, -75.21) (  -0.19, -74.41)   91.87                80
 12/22/2019   18:27:57   (   0.00, -75.24) (   0.06, -75.07)   19.61                80
 12/25/2019   06:33:13   (   0.00, -75.27) (   0.10, -75.69)   48.34                80