Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 7 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/09/2022   10:53:02   (   0.04,-137.26) (  -0.23,-136.05)  137.99                80
 07/10/2022   23:18:08   (  -0.04,-137.26) (  -1.01,-141.45)  478.72                80
 07/11/2022   22:57:03   (  -0.03,-137.26) (   0.01,-137.00)   29.83                80
 07/14/2022   11:03:37   (   0.02,-137.28) (   0.18,-137.92)   73.23                80
 07/15/2022   10:42:33   (   0.02,-137.28) (  -0.84,-133.47)  434.93                80
 07/16/2022   23:07:39   (  -0.03,-137.27) (  -0.40,-138.87)  182.81                80
 07/17/2022   22:46:35   (  -0.03,-137.27) (   0.62,-134.42)  325.44                80
 07/19/2022   11:11:33   (   0.03,-137.28) (   0.57,-139.80)  285.83                80
 07/20/2022   10:50:27   (   0.03,-137.28) (  -0.39,-135.33)  222.15                80
 07/21/2022   23:15:35   (  -0.02,-137.26) (  -0.79,-140.75)  396.57                80
 07/22/2022   22:54:30   (  -0.02,-137.26) (   0.23,-136.29)  110.90                80