Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2021 5 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/27/2021   11:01:16   (  -0.00,-137.19) (   0.73,-140.57)  384.50                80
 05/28/2021   10:39:38   (  -0.01,-137.19) (  -0.25,-135.97)  137.77                80
 05/29/2021   23:01:14   (   0.00,-137.17) (  -0.93,-141.18)  457.76                80
 05/30/2021   22:44:57   (   0.01,-137.17) (   0.11,-136.60)   64.46                80
 06/02/2021   10:47:27   (  -0.00,-137.15) (   0.01,-137.19)    4.26                80
 06/04/2021   22:47:25   (   0.00,-137.12) (  -0.14,-137.81)   78.30                80
 06/05/2021   22:31:08   (   0.00,-137.11) (   0.90,-133.22)  443.54                80
 06/07/2021   10:52:34   (  -0.00,-137.09) (   0.31,-138.39)  148.02                80
 06/08/2021   10:30:57   (  -0.01,-137.08) (  -0.73,-133.80)  373.30                80