Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/29/2020   10:53:04   (  -0.00,-137.25) (   0.67,-140.28)  345.59                80
 11/30/2020   10:36:48   (   0.00,-137.25) (  -0.37,-135.70)  177.04                80
 12/01/2020   22:55:44   (  -0.00,-137.24) (  -0.85,-140.91)  418.79                80
 12/02/2020   22:39:28   (  -0.01,-137.23) (   0.19,-136.33)  103.34                80
 12/04/2020   10:58:17   (   0.00,-137.23) (   0.97,-141.51)  488.34                80
 12/05/2020   10:42:01   (   0.01,-137.22) (  -0.07,-136.93)   33.26                80
 12/07/2020   22:42:00   (  -0.00,-137.19) (  -0.09,-137.56)   42.62                80
 12/08/2020   22:25:44   (  -0.00,-137.18) (   0.96,-132.99)  478.59                80
 12/10/2020   10:44:33   (   0.00,-137.16) (   0.21,-138.17)  114.36                80
 12/11/2020   10:28:16   (   0.01,-137.15) (  -0.78,-133.58)  406.42                80
 12/12/2020   22:47:13   (  -0.00,-137.11) (  -0.36,-138.80)  192.08                80