Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 2 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/23/2021   10:24:42   (  -0.17,-128.10) (   0.72,-132.04)  450.27                80
 02/24/2021   10:03:06   (  -0.17,-128.11) (  -0.35,-127.47)   74.59                80
 02/26/2021   22:08:25   (   0.16,-128.19) (   0.18,-128.09)   11.49                80
 03/01/2021   10:10:56   (  -0.16,-128.22) (  -0.05,-128.69)   53.56                80
 03/02/2021   09:49:19   (  -0.16,-128.23) (  -1.07,-124.10)  470.51                80
 03/03/2021   22:10:56   (   0.15,-128.28) (  -0.11,-129.31)  118.93                80
 03/04/2021   21:54:40   (   0.16,-128.29) (   0.97,-124.74)  405.38                80
 03/06/2021   10:16:07   (  -0.14,-128.29) (   0.23,-129.91)  185.00                80
 03/07/2021   09:54:30   (  -0.15,-128.30) (  -0.84,-125.33)  338.31                80