Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/14/2020   22:21:27   (  -0.02,-137.19) (   0.89,-133.03)  473.25                80
 08/16/2020   10:45:38   (   0.02,-137.18) (   0.27,-138.22)  119.55                80
 08/17/2020   10:26:42   (  -0.02,-137.17) (  -0.80,-133.65)  401.19                80
 08/18/2020   22:45:39   (   0.01,-137.17) (  -0.40,-138.87)  195.00                80
 08/19/2020   22:29:24   (   0.01,-137.16) (   0.68,-134.30)  326.38                80
 08/21/2020   10:48:13   (  -0.01,-137.14) (   0.54,-139.48)  267.19                80
 08/22/2020   10:31:57   (  -0.00,-137.13) (  -0.48,-134.90)  253.84                80
 08/23/2020   22:50:55   (   0.00,-137.12) (  -0.66,-140.13)  343.47                80
 08/24/2020   22:34:39   (   0.00,-137.10) (   0.36,-135.55)  177.08                80
 08/26/2020   10:53:29   (  -0.00,-137.08) (   0.80,-140.74)  417.76                80
 08/27/2020   10:37:12   (  -0.00,-137.06) (  -0.22,-136.16)  102.35                80