Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/22/2020   10:43:16   (  -0.02,-137.20) (   0.14,-137.99)   90.04                80
 04/23/2020   10:21:40   (  -0.02,-137.20) (  -0.85,-133.41)  431.63                80
 04/24/2020   22:43:18   (   0.02,-137.19) (  -0.33,-138.63)  164.75                80
 04/25/2020   22:27:02   (   0.02,-137.19) (   0.73,-134.06)  356.52                80
 04/27/2020   10:48:33   (  -0.02,-137.18) (   0.46,-139.25)  236.85                80
 04/28/2020   10:26:57   (  -0.02,-137.16) (  -0.59,-134.68)  283.79                80
 04/29/2020   22:48:36   (   0.01,-137.14) (  -0.59,-139.90)  314.38                80
 04/30/2020   22:32:19   (   0.01,-137.13) (   0.41,-135.32)  205.92                80
 05/02/2020   10:53:49   (  -0.00,-137.11) (   0.77,-140.51)  388.63                80
 05/03/2020   10:32:14   (  -0.00,-137.09) (  -0.28,-135.94)  131.29                80
 05/04/2020   22:53:52   (   0.00,-137.05) (  -0.90,-141.17)  468.08                80
 05/05/2020   22:37:36   (   0.00,-137.03) (   0.10,-136.58)   51.57                80