Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/17/2021   06:41:51   (  -0.13, -75.24) (  -0.15, -75.25)    3.08                80
 08/19/2021   18:41:48   (   0.14, -75.25) (  -0.01, -75.86)   69.22                80
 08/20/2021   18:25:31   (   0.14, -75.26) (   1.04, -71.27)  455.05                80
 08/22/2021   06:46:58   (  -0.15, -75.29) (   0.14, -76.45)  132.65                80
 08/23/2021   06:25:21   (  -0.14, -75.30) (  -0.92, -71.86)  392.13                80
 08/24/2021   18:46:56   (   0.15, -75.32) (  -0.24, -77.07)  199.22                80
 08/25/2021   18:30:37   (   0.15, -75.34) (   0.76, -72.47)  326.27                80
 08/27/2021   06:52:06   (  -0.15, -75.38) (   0.37, -77.66)  259.56                80
 08/28/2021   06:30:28   (  -0.15, -75.40) (  -0.69, -73.07)  266.02                80