Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2021 11 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)
 11/26/2021   22:34:58   (  -0.00,-137.20) (   1.01,-132.83)  498.69                80
 11/28/2021   10:54:41   (  -0.00,-137.20) (   0.26,-138.22)  117.68                80
 11/29/2021   10:39:00   (   0.00,-137.19) (  -0.76,-133.79)  387.84                80
 11/30/2021   22:58:53   (   0.00,-137.18) (  -0.48,-139.23)  234.04                80
 12/01/2021   22:43:13   (  -0.00,-137.17) (   0.51,-134.79)  270.88                80
 12/03/2021   11:02:57   (   0.00,-137.15) (   0.70,-140.19)  347.29                80
 12/04/2021   10:47:18   (   0.01,-137.13) (  -0.32,-135.76)  156.69                80
 12/05/2021   23:07:12   (  -0.00,-137.10) (  -0.93,-141.20)  467.76                80
 12/06/2021   22:51:33   (  -0.00,-137.08) (   0.07,-136.77)   35.54                80
 12/09/2021   10:55:40   (  -0.00,-137.03) (   0.13,-137.75)   81.67                80
 12/10/2021   10:34:40   (  -0.00,-137.01) (  -0.84,-133.31)  421.19                80