Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/22/2021   06:49:34   (  -0.04, -75.21) (   0.59, -78.11)  330.56                80
 03/23/2021   06:27:56   (  -0.04, -75.21) (  -0.43, -73.52)  192.26                80
 03/24/2021   18:49:33   (   0.03, -75.20) (  -0.77, -78.73)  402.57                80
 03/25/2021   18:33:15   (   0.03, -75.21) (   0.25, -74.14)  120.84                80
 03/27/2021   06:54:43   (  -0.02, -75.23) (   0.91, -79.32)  467.27                80
 03/28/2021   06:33:06   (  -0.02, -75.23) (  -0.11, -74.73)   56.22                80
 03/30/2021   18:35:46   (   0.02, -75.24) (   0.00, -75.37)   14.26                80
 04/02/2021   06:40:57   (  -0.02, -75.28) (   0.15, -75.96)   77.79                80
 04/03/2021   06:19:20   (  -0.02, -75.29) (  -0.92, -71.38)  446.11                80
 04/04/2021   18:40:55   (   0.02, -75.30) (  -0.30, -76.58)  147.41                80