Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 4 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)
 04/11/2020   10:51:37   (  -0.02,-137.21) (   0.60,-140.04)  321.56                80
 04/12/2020   10:30:01   (  -0.02,-137.21) (  -0.39,-135.45)  199.84                80
 04/13/2020   22:51:39   (   0.02,-137.20) (  -0.79,-140.68)  396.85                80
 04/14/2020   22:35:23   (   0.02,-137.20) (   0.26,-136.10)  124.50                80
 04/16/2020   10:56:54   (  -0.01,-137.19) (   0.94,-141.29)  468.41                80
 04/17/2020   10:35:18   (  -0.01,-137.18) (  -0.11,-136.72)   52.58                80
 04/19/2020   22:38:00   (   0.00,-137.16) (  -0.07,-137.36)   24.14                80
 04/20/2020   22:21:45   (   0.00,-137.15) (   0.99,-132.79)  496.83                80
 04/22/2020   10:43:15   (  -0.00,-137.14) (   0.21,-137.98)   96.99                80
 04/23/2020   10:21:40   (  -0.01,-137.12) (  -0.84,-133.41)  423.30                80