Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2021 11 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/25/2021   22:50:39   (  -0.00,-137.20) (  -0.04,-137.26)    7.84                80
 11/26/2021   22:34:58   (  -0.01,-137.20) (   1.00,-132.83)  498.46                80
 11/28/2021   10:54:41   (   0.00,-137.19) (   0.26,-138.22)  117.87                80
 11/29/2021   10:39:00   (   0.00,-137.19) (  -0.76,-133.79)  387.55                80
 11/30/2021   22:58:53   (  -0.00,-137.17) (  -0.48,-139.23)  234.69                80
 12/01/2021   22:43:13   (  -0.00,-137.16) (   0.51,-134.79)  270.13                80
 12/03/2021   11:02:57   (   0.00,-137.14) (   0.71,-140.19)  347.98                80
 12/04/2021   10:44:38   (   0.01,-137.13) (  -0.32,-135.76)  155.90                80
 12/05/2021   23:07:12   (  -0.00,-137.09) (  -0.94,-141.20)  468.92                80
 12/06/2021   22:51:33   (  -0.00,-137.07) (   0.07,-136.77)   34.29                80