Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 2 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)
 02/24/2020   10:41:45   (   0.02,-137.21) (   0.13,-137.73)   59.93                80
 02/25/2020   10:20:09   (   0.02,-137.20) (  -0.91,-133.16)  461.18                80
 02/26/2020   22:41:49   (  -0.02,-137.20) (  -0.28,-138.39)  135.71                80
 02/27/2020   22:25:33   (  -0.02,-137.19) (   0.76,-133.81)  385.20                80
 02/29/2020   10:47:03   (   0.02,-137.17) (   0.41,-139.01)  209.13                80
 03/01/2020   10:25:27   (   0.02,-137.16) (  -0.57,-134.42)  311.27                80
 03/02/2020   22:47:06   (  -0.02,-137.14) (  -0.61,-139.65)  287.08                80
 03/03/2020   22:30:51   (  -0.02,-137.12) (   0.43,-135.08)  232.82                80
 03/05/2020   10:49:41   (   0.02,-137.09) (   0.75,-140.27)  363.21                80
 03/06/2020   10:33:26   (   0.02,-137.07) (  -0.29,-135.70)  156.07                80