Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 12 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2022   10:47:00   (   0.00,-137.30) (  -0.98,-133.01)  489.58                80
 12/15/2022   23:12:15   (  -0.00,-137.28) (  -0.26,-138.45)  132.95                80
 12/16/2022   22:51:15   (   0.00,-137.28) (   0.72,-134.01)  371.77                80
 12/18/2022   11:16:22   (   0.00,-137.27) (   0.49,-139.42)  245.14                80
 12/19/2022   10:55:22   (   0.00,-137.25) (  -0.50,-134.98)  259.08                80
 12/20/2022   23:20:38   (  -0.01,-137.22) (  -0.75,-140.41)  364.86                80
 12/21/2022   23:02:18   (  -0.01,-137.20) (   0.24,-135.97)  138.82                80
 12/23/2022   11:24:44   (   0.02,-137.17) (   0.96,-141.38)  479.86                80
 12/24/2022   11:03:45   (   0.02,-137.14) (  -0.03,-136.94)   23.01                80
 12/26/2022   23:10:41   (  -0.01,-137.06) (  -0.22,-137.94)  100.16                80
 12/27/2022   22:49:41   (  -0.01,-137.04) (   0.77,-133.50)  402.55                80