Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/06/2021   06:47:54   (  -0.12, -75.22) (   0.40, -77.42)  251.96                80
 08/07/2021   06:31:37   (  -0.11, -75.21) (  -0.65, -72.84)  270.27                80
 08/08/2021   18:50:32   (   0.12, -75.20) (  -0.53, -78.04)  324.47                80
 08/09/2021   18:34:14   (   0.12, -75.20) (   0.53, -73.46)  198.32                80
 08/11/2021   06:53:02   (  -0.13, -75.19) (   0.65, -78.63)  392.47                80
 08/12/2021   06:36:44   (  -0.13, -75.19) (  -0.40, -74.05)  130.56                80
 08/13/2021   18:55:40   (   0.13, -75.19) (  -0.77, -79.25)  463.30                80
 08/14/2021   18:39:21   (   0.13, -75.19) (   0.23, -74.66)   60.05                80
 08/17/2021   06:39:11   (  -0.14, -75.19) (  -0.11, -75.24)    7.38                80
 08/19/2021   18:41:49   (   0.15, -75.19) (   0.00, -75.87)   77.05                80