Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 3 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)
 03/26/2020   10:54:40   (  -0.01,-137.22) (   0.76,-140.81)  407.59                80
 03/27/2020   10:33:03   (  -0.02,-137.22) (  -0.23,-136.22)  113.69                80
 03/28/2020   22:54:43   (   0.02,-137.21) (  -0.91,-141.46)  484.04                80
 03/29/2020   22:38:26   (   0.03,-137.20) (   0.08,-136.87)   37.04                80
 04/01/2020   10:41:02   (  -0.03,-137.18) (   0.02,-137.50)   35.96                80
 04/02/2020   10:19:25   (  -0.03,-137.17) (  -0.97,-132.92)  484.30                80
 04/03/2020   22:41:04   (   0.02,-137.13) (  -0.22,-138.14)  115.14                80
 04/04/2020   22:24:48   (   0.02,-137.12) (   0.83,-133.57)  404.94                80
 04/06/2020   10:46:19   (  -0.01,-137.10) (   0.37,-138.76)  189.41                80
 04/07/2020   10:24:43   (  -0.01,-137.08) (  -0.67,-134.18)  330.09                80
 04/08/2020   22:46:21   (   0.01,-137.03) (  -0.50,-139.41)  270.57                80