Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 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)
 07/21/2021   06:51:30   (  -0.09, -75.20) (   0.62, -78.41)  365.70                80
 07/22/2021   06:35:12   (  -0.09, -75.20) (  -0.43, -73.82)  157.60                80
 07/23/2021   18:54:08   (   0.11, -75.20) (  -0.78, -79.02)  436.30                80
 07/24/2021   18:37:50   (   0.10, -75.21) (   0.27, -74.44)   87.72                80
 07/27/2021   06:40:20   (  -0.11, -75.24) (  -0.16, -75.03)   24.13                80
 07/29/2021   18:40:18   (   0.11, -75.27) (   0.02, -75.65)   42.96                80
 07/30/2021   18:24:00   (   0.11, -75.29) (   1.08, -71.06)  482.33                80
 08/01/2021   06:42:48   (  -0.12, -75.33) (   0.09, -76.24)  104.12                80
 08/02/2021   06:26:30   (  -0.12, -75.34) (  -0.96, -71.65)  421.14                80