Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 6 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)
 06/22/2022   11:08:44   (   0.04,-137.19) (   0.50,-139.36)  246.48                80
 06/23/2022   10:47:40   (   0.03,-137.19) (  -0.51,-134.90)  261.66                80
 06/24/2022   23:12:46   (  -0.03,-137.19) (  -0.71,-140.31)  355.40                80
 06/25/2022   22:51:41   (  -0.03,-137.18) (   0.30,-135.85)  152.33                80
 06/27/2022   11:16:40   (   0.03,-137.18) (   0.94,-141.23)  460.77                80
 06/28/2022   10:55:35   (   0.02,-137.18) (  -0.07,-136.77)   46.42                80
 06/30/2022   23:02:17   (  -0.01,-137.15) (  -0.13,-137.72)   65.19                80
 07/01/2022   22:41:13   (  -0.01,-137.14) (   0.88,-133.27)  441.70                80
 07/03/2022   11:06:11   (   0.01,-137.13) (   0.35,-138.64)  172.42                80
 07/04/2022   10:45:06   (   0.01,-137.12) (  -0.67,-134.19)  334.28                80