Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/30/2021   18:24:00   (   0.10, -75.21) (   1.04, -71.05)  474.61                80
 08/01/2021   06:45:27   (  -0.11, -75.22) (   0.13, -76.22)  114.78                80
 08/02/2021   06:26:30   (  -0.11, -75.23) (  -0.92, -71.64)  409.24                80
 08/03/2021   18:45:25   (   0.12, -75.24) (  -0.26, -76.84)  182.91                80
 08/04/2021   18:29:07   (   0.12, -75.25) (   0.79, -72.26)  341.47                80
 08/06/2021   06:50:35   (  -0.13, -75.27) (   0.38, -77.43)  247.12                80
 08/07/2021   06:28:57   (  -0.13, -75.28) (  -0.67, -72.85)  277.31                80
 08/08/2021   18:50:32   (   0.14, -75.30) (  -0.50, -78.05)  314.33                80
 08/09/2021   18:34:15   (   0.14, -75.32) (   0.55, -73.47)  210.71                80
 08/11/2021   06:55:43   (  -0.15, -75.35) (   0.57, -78.65)  376.45                80
 08/12/2021   06:34:05   (  -0.14, -75.36) (  -0.43, -74.06)  148.76                80