Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/10/2020   22:41:21   (  -0.04,-137.19) (  -0.12,-137.65)   51.54                80
 10/11/2020   22:25:04   (  -0.03,-137.18) (   0.91,-133.07)  469.86                80
 10/13/2020   10:43:53   (   0.03,-137.17) (   0.29,-138.25)  123.43                80
 10/14/2020   10:27:36   (   0.03,-137.16) (  -0.74,-133.66)  397.67                80
 10/15/2020   22:46:34   (  -0.02,-137.14) (  -0.45,-138.89)  199.72                80
 10/16/2020   22:30:18   (  -0.03,-137.13) (   0.59,-134.31)  321.17                80
 10/18/2020   10:49:07   (   0.02,-137.10) (   0.55,-139.50)  272.99                80
 10/19/2020   10:32:51   (   0.03,-137.08) (  -0.48,-134.92)  247.29                80
 10/20/2020   22:51:49   (  -0.02,-137.05) (  -0.70,-140.14)  351.60                80
 10/21/2020   22:35:33   (  -0.02,-137.03) (   0.33,-135.56)  168.27                80
 10/23/2020   10:54:21   (   0.02,-136.99) (   0.87,-140.74)  427.21                80
 10/24/2020   10:38:04   (   0.01,-136.97) (  -0.16,-136.16)   92.33                80