Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 3 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/18/2020   22:44:06   (  -0.02,-137.20) (  -0.40,-138.90)  194.29                80
 03/19/2020   22:27:50   (  -0.02,-137.19) (   0.64,-134.33)  326.86                80
 03/21/2020   10:49:21   (   0.01,-137.18) (   0.55,-139.52)  266.97                80
 03/22/2020   10:27:45   (   0.01,-137.17) (  -0.49,-134.94)  253.64                80
 03/23/2020   22:49:24   (  -0.01,-137.16) (  -0.66,-140.18)  344.16                80
 03/24/2020   22:33:08   (  -0.00,-137.15) (   0.33,-135.59)  176.50                80
 03/26/2020   10:54:39   (   0.00,-137.13) (   0.81,-140.80)  417.70                80
 03/27/2020   10:33:04   (  -0.00,-137.11) (  -0.23,-136.22)  102.31                80
 03/28/2020   22:54:42   (   0.01,-137.09) (  -0.96,-141.45)  497.07                80
 03/29/2020   22:38:27   (   0.01,-137.07) (   0.08,-136.88)   22.72                80