Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2021 2 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)
 02/27/2021   10:49:21   (  -0.04,-137.20) (   0.19,-138.26)  121.33                80
 02/28/2021   10:27:44   (  -0.04,-137.19) (  -0.82,-133.68)  400.76                80
 03/01/2021   22:49:21   (   0.04,-137.18) (  -0.36,-138.89)  195.40                80
 03/02/2021   22:33:04   (   0.04,-137.17) (   0.66,-134.30)  326.40                80
 03/04/2021   10:54:32   (  -0.03,-137.16) (   0.48,-139.49)  265.38                80
 03/05/2021   10:32:55   (  -0.03,-137.14) (  -0.54,-134.90)  255.79                80
 03/06/2021   22:54:32   (   0.03,-137.11) (  -0.63,-140.12)  341.93                80
 03/07/2021   22:38:14   (   0.02,-137.09) (   0.39,-135.53)  179.03                80
 03/09/2021   10:59:42   (  -0.01,-137.07) (   0.81,-140.70)  413.61                80
 03/10/2021   10:38:04   (  -0.01,-137.05) (  -0.20,-136.11)  107.05                80
 03/11/2021   22:59:41   (   0.00,-137.01) (  -0.95,-141.33)  491.37                80