Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 7 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)
 07/23/2020   22:40:58   (  -0.01,-137.20) (  -0.03,-137.17)    4.14                80
 07/26/2020   10:43:32   (   0.01,-137.21) (   0.11,-137.79)   66.19                80
 07/27/2020   10:21:56   (   0.01,-137.20) (  -0.90,-133.21)  455.79                80
 07/28/2020   22:43:34   (  -0.02,-137.20) (  -0.26,-138.44)  140.56                80
 07/29/2020   22:27:18   (  -0.02,-137.19) (   0.75,-133.85)  380.98                80
 07/31/2020   10:46:08   (   0.02,-137.18) (   0.42,-139.05)  211.91                80
 08/01/2020   10:29:52   (   0.03,-137.17) (  -0.59,-134.46)  309.21                80
 08/02/2020   22:48:49   (  -0.03,-137.16) (  -0.62,-139.68)  288.18                80
 08/03/2020   22:32:33   (  -0.03,-137.14) (   0.45,-135.11)  232.75                80