Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 16.  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   06:39:10   (  -0.12, -75.22) (  -0.09, -75.23)    3.86                80
 08/19/2021   18:41:48   (   0.14, -75.20) (  -0.02, -75.86)   74.82                80
 08/20/2021   18:25:31   (   0.14, -75.20) (   1.04, -71.27)  448.33                80
 08/22/2021   06:46:58   (  -0.15, -75.21) (   0.14, -76.44)  140.88                80
 08/23/2021   06:28:01   (  -0.14, -75.21) (  -0.92, -71.86)  382.80                80
 08/24/2021   18:46:56   (   0.15, -75.22) (  -0.24, -77.07)  210.41                80
 08/25/2021   18:30:37   (   0.15, -75.23) (   0.76, -72.47)  313.98                80
 08/27/2021   06:52:06   (  -0.15, -75.25) (   0.37, -77.66)  273.41                80
 08/28/2021   06:30:27   (  -0.15, -75.26) (  -0.63, -73.06)  251.09                80
 08/29/2021   18:52:03   (   0.16, -75.27) (  -0.52, -78.27)  341.35                80