Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 1 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/09/2020   06:49:11   (   0.04, -75.21) (   0.99, -79.53)  491.67                80
 01/10/2020   06:27:35   (   0.04, -75.21) (  -0.04, -74.95)   30.15                80
 01/12/2020   18:32:59   (  -0.05, -75.22) (  -0.12, -75.61)   43.65                80
 01/13/2020   18:11:24   (  -0.04, -75.23) (   0.91, -71.03)  478.57                80
 01/15/2020   06:35:34   (   0.05, -75.24) (   0.28, -76.22)  112.23                80
 01/16/2020   06:13:59   (   0.04, -75.25) (  -0.75, -71.65)  410.28                80
 01/17/2020   18:38:18   (  -0.05, -75.27) (  -0.44, -76.88)  184.18                80
 01/18/2020   18:16:42   (  -0.05, -75.29) (   0.59, -72.31)  338.85                80
 01/20/2020   06:40:54   (   0.06, -75.31) (   0.54, -77.51)  250.62                80
 01/21/2020   06:19:18   (   0.06, -75.33) (  -0.49, -72.94)  272.53                80