Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 7 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/20/2020   18:31:32   (   0.02, -75.21) (  -0.01, -75.49)   30.65                80
 07/21/2020   18:15:15   (   0.01, -75.22) (   1.00, -70.91)  492.24                80
 07/23/2020   06:34:05   (  -0.01, -75.22) (   0.21, -76.09)   99.34                80
 07/24/2020   06:17:49   (  -0.01, -75.23) (  -0.86, -71.52)  423.77                80
 07/25/2020   18:36:47   (   0.01, -75.25) (  -0.30, -76.75)  169.43                80
 07/26/2020   18:20:31   (   0.01, -75.27) (   0.71, -72.16)  354.07                80
 07/28/2020   06:39:21   (  -0.02, -75.28) (   0.44, -77.36)  236.48                80
 07/29/2020   06:23:05   (  -0.01, -75.29) (  -0.57, -72.77)  287.08                80
 07/30/2020   18:42:03   (   0.02, -75.32) (  -0.58, -78.00)  305.56                80
 07/31/2020   18:25:47   (   0.02, -75.34) (   0.44, -73.42)  218.35                80