Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 2 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/25/2020   10:20:09   (   0.02,-137.21) (  -0.87,-133.15)  462.52                80
 02/26/2020   22:41:49   (  -0.02,-137.21) (  -0.26,-138.39)  133.79                80
 02/27/2020   22:25:33   (  -0.02,-137.21) (   0.72,-133.81)  387.67                80
 02/29/2020   10:47:03   (   0.02,-137.20) (   0.45,-139.00)  205.62                80
 03/01/2020   10:25:27   (   0.03,-137.19) (  -0.58,-134.43)  315.32                80
 03/02/2020   22:47:07   (  -0.03,-137.18) (  -0.60,-139.66)  282.41                80
 03/03/2020   22:30:51   (  -0.03,-137.17) (   0.44,-135.08)  238.02                80
 03/05/2020   10:49:41   (   0.03,-137.15) (   0.74,-140.28)  356.95                80
 03/06/2020   10:33:26   (   0.03,-137.13) (  -0.30,-135.70)  162.88                80
 03/07/2020   22:52:25   (  -0.03,-137.10) (  -0.87,-140.93)  436.43                80
 03/08/2020   22:36:09   (  -0.03,-137.08) (   0.11,-136.35)   83.15                80