Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 2 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/10/2022   22:38:07   (   0.04,-137.20) (   0.96,-133.06)  471.63                80
 02/12/2022   11:00:28   (  -0.03,-137.20) (   0.27,-138.45)  143.03                80
 02/13/2022   10:39:26   (  -0.03,-137.20) (  -0.76,-134.01)  363.58                80
 02/14/2022   23:04:34   (   0.01,-137.18) (  -0.49,-139.42)  255.73                80
 02/15/2022   22:46:11   (   0.00,-137.17) (   0.48,-134.97)  250.77                80
 02/17/2022   11:08:32   (   0.00,-137.16) (   0.75,-140.36)  364.73                80
 02/18/2022   10:47:29   (  -0.00,-137.15) (  -0.28,-135.91)  141.17                80
 02/19/2022   23:09:58   (   0.00,-137.13) (  -0.96,-141.33)  479.58                80
 02/20/2022   22:54:15   (   0.00,-137.11) (   0.07,-136.89)   26.01                80
 02/23/2022   10:58:13   (  -0.00,-137.07) (   0.17,-137.82)   85.69                80