Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/07/2019   06:21:31   (  -0.01, -75.20) (  -0.40, -73.36)  208.50                80
 05/08/2019   18:43:12   (   0.01, -75.20) (  -0.76, -78.61)  389.67                80
 05/09/2019   18:26:58   (   0.01, -75.19) (   0.27, -74.04)  130.88                80
 05/11/2019   06:48:30   (  -0.01, -75.19) (   0.89, -79.26)  463.29                80
 05/12/2019   06:26:55   (  -0.01, -75.19) (  -0.09, -74.68)   57.61                80
 05/14/2019   18:29:42   (   0.00, -75.19) (  -0.04, -75.36)   18.42                80
 05/17/2019   06:34:59   (  -0.00, -75.21) (   0.15, -76.00)   89.55                80
 05/18/2019   06:13:24   (  -0.01, -75.22) (  -0.83, -71.42)  432.23                80
 05/19/2019   18:35:05   (   0.01, -75.24) (  -0.33, -76.67)  163.88                80
 05/20/2019   18:18:51   (   0.01, -75.25) (   0.70, -72.10)  358.26                80