Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 2 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/26/2021   22:08:26   (   0.16,-128.20) (   0.20,-128.10)   12.33                80
 03/01/2021   10:10:56   (  -0.16,-128.22) (  -0.02,-128.68)   52.95                80
 03/02/2021   09:49:19   (  -0.16,-128.24) (  -1.09,-124.10)  471.33                80
 03/03/2021   22:10:57   (   0.15,-128.29) (  -0.08,-129.32)  117.58                80
 03/04/2021   21:54:39   (   0.16,-128.31) (   0.94,-124.73)  406.84                80
 03/06/2021   10:16:07   (  -0.14,-128.30) (   0.20,-129.92)  183.63                80
 03/07/2021   09:54:30   (  -0.15,-128.31) (  -0.81,-125.33)  339.79                80
 03/08/2021   22:16:07   (   0.13,-128.34) (  -0.35,-130.55)  250.98                80
 03/09/2021   21:59:50   (   0.13,-128.35) (   0.67,-125.96)  272.94                80