Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/18/2022   10:47:51   (   0.06,-137.33) (  -0.81,-133.48)  438.43                80
 09/19/2022   23:07:36   (  -0.05,-137.33) (  -0.42,-138.88)  177.98                80
 09/20/2022   22:51:51   (  -0.05,-137.33) (   0.58,-134.42)  330.30                80
 09/22/2022   11:11:29   (   0.04,-137.32) (   0.57,-139.81)  282.73                80
 09/23/2022   10:55:44   (   0.04,-137.32) (  -0.42,-135.35)  225.29                80
 09/24/2022   23:15:29   (  -0.03,-137.31) (  -0.79,-140.75)  391.83                80
 09/25/2022   22:59:43   (  -0.04,-137.30) (   0.21,-136.29)  116.05                80
 09/27/2022   11:19:21   (   0.03,-137.29) (   1.00,-141.66)  497.68                80
 09/28/2022   11:03:35   (   0.04,-137.28) (   0.00,-137.20)    9.80                80
 09/30/2022   23:04:54   (  -0.03,-137.24) (  -0.25,-138.13)  102.15                80
 10/01/2022   22:49:09   (  -0.03,-137.22) (   0.75,-133.67)  404.26                80