Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 2 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/10/2020   06:43:13   (   0.07, -75.21) (   0.71, -78.03)  322.37                80
 02/11/2020   06:21:37   (   0.07, -75.21) (  -0.32, -73.46)  199.78                80
 02/12/2020   18:43:18   (  -0.07, -75.23) (  -0.83, -78.70)  395.35                80
 02/13/2020   18:27:02   (  -0.07, -75.24) (   0.21, -74.12)  127.38                80
 02/15/2020   06:48:32   (   0.07, -75.25) (   1.01, -79.31)  463.00                80
 02/16/2020   06:26:56   (   0.07, -75.26) (  -0.03, -74.73)   59.86                80
 02/18/2020   18:29:41   (  -0.08, -75.30) (  -0.08, -75.40)   11.63                80
 02/21/2020   06:34:55   (   0.09, -75.34) (   0.26, -76.01)   76.77                80
 02/22/2020   06:13:19   (   0.09, -75.36) (  -0.78, -71.44)  447.00                80