Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/27/2021   06:37:39   (  -0.10, -75.20) (  -0.12, -75.02)   20.34                80
 07/29/2021   18:40:18   (   0.11, -75.20) (   0.03, -75.65)   50.31                80
 07/30/2021   18:24:00   (   0.10, -75.21) (   1.03, -71.05)  473.46                80
 08/01/2021   06:42:47   (  -0.12, -75.21) (   0.14, -76.22)  115.91                80
 08/02/2021   06:26:29   (  -0.11, -75.22) (  -0.91, -71.64)  407.82                80
 08/03/2021   18:45:26   (   0.13, -75.22) (  -0.22, -76.86)  185.41                80
 08/04/2021   18:29:07   (   0.13, -75.23) (   0.78, -72.26)  338.65                80
 08/06/2021   06:50:36   (  -0.14, -75.25) (   0.34, -77.44)  249.89                80
 08/07/2021   06:31:37   (  -0.14, -75.26) (  -0.66, -72.85)  274.22                80
 08/08/2021   18:50:33   (   0.15, -75.27) (  -0.46, -78.06)  318.52                80
 08/09/2021   18:34:15   (   0.15, -75.28) (   0.53, -73.47)  206.19                80