Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 6 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/28/2022   10:55:35   (   0.03,-137.19) (  -0.07,-136.77)   48.53                80
 06/30/2022   23:02:17   (  -0.03,-137.18) (  -0.14,-137.72)   61.67                80
 07/01/2022   22:41:13   (  -0.02,-137.17) (   0.87,-133.26)  445.46                80
 07/03/2022   11:06:11   (   0.03,-137.16) (   0.35,-138.64)  168.89                80
 07/04/2022   10:45:06   (   0.03,-137.15) (  -0.66,-134.18)  338.07                80
 07/05/2022   23:10:13   (  -0.03,-137.13) (  -0.56,-139.59)  280.29                80
 07/06/2022   22:49:07   (  -0.03,-137.11) (   0.39,-135.12)  226.34                80
 07/08/2022   11:14:05   (   0.03,-137.09) (   0.82,-140.50)  389.19                80
 07/09/2022   10:53:01   (   0.02,-137.07) (  -0.20,-136.04)  116.77                80
 07/11/2022   22:59:43   (  -0.01,-137.01) (  -0.01,-137.00)    1.74                80