Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 4 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2022   23:09:12   (   0.03,-137.18) (  -0.61,-140.03)  324.50                80
 04/21/2022   22:48:08   (   0.03,-137.17) (   0.40,-135.58)  182.47                80
 04/23/2022   11:13:06   (  -0.02,-137.16) (   0.85,-140.95)  431.63                80
 04/24/2022   10:52:03   (  -0.02,-137.16) (  -0.16,-136.50)   75.07                80
 04/26/2022   22:58:48   (   0.01,-137.13) (  -0.07,-137.46)   37.51                80
 04/27/2022   22:37:44   (   0.02,-137.12) (   0.95,-133.01)  469.17                80
 04/29/2022   11:02:44   (  -0.01,-137.11) (   0.25,-138.39)  145.47                80
 04/30/2022   10:41:39   (  -0.02,-137.10) (  -0.70,-133.93)  360.83                80
 05/01/2022   23:04:07   (   0.01,-137.08) (  -0.52,-139.35)  259.41                80
 05/02/2022   22:48:24   (   0.01,-137.06) (   0.50,-134.90)  246.54                80