Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 8 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/21/2022   11:03:41   (   0.08,-137.32) (   0.16,-137.57)   29.76                80
 08/22/2022   10:42:36   (   0.08,-137.32) (  -0.88,-133.12)  478.68                80
 08/23/2022   23:05:03   (  -0.07,-137.32) (  -0.36,-138.52)  138.23                80
 08/24/2022   22:49:18   (  -0.07,-137.31) (   0.68,-134.07)  369.92                80
 08/26/2022   11:08:55   (   0.06,-137.31) (   0.56,-139.44)  242.74                80
 08/27/2022   10:53:10   (   0.06,-137.31) (  -0.48,-134.99)  265.17                80
 08/28/2022   23:12:56   (  -0.05,-137.30) (  -0.75,-140.39)  352.49                80
 08/29/2022   22:57:11   (  -0.06,-137.29) (   0.23,-135.93)  155.24                80
 08/31/2022   11:16:48   (   0.05,-137.28) (   0.96,-141.30)  458.28                80
 09/01/2022   11:01:03   (   0.05,-137.27) (  -0.03,-136.84)   48.90                80
 09/03/2022   23:02:24   (  -0.05,-137.23) (  -0.20,-137.78)   63.90                80