Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 5 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/03/2021   10:16:00   (   0.05,-127.76) (   0.40,-129.47)  194.34                80
 05/04/2021   09:54:23   (   0.04,-127.80) (  -0.63,-124.89)  332.44                80
 05/05/2021   22:15:58   (  -0.05,-127.81) (  -0.58,-130.09)  260.25                80
 05/06/2021   21:59:41   (  -0.05,-127.85) (   0.51,-125.51)  267.24                80
 05/08/2021   10:21:10   (   0.05,-127.97) (   0.65,-130.69)  310.22                80
 05/09/2021   09:59:32   (   0.05,-128.00) (  -0.38,-126.10)  216.33                80
 05/10/2021   22:21:09   (  -0.05,-128.00) (  -0.77,-131.32)  378.04                80
 05/11/2021   22:04:51   (  -0.04,-128.03) (   0.26,-126.73)  148.84                80
 05/13/2021   10:26:19   (   0.05,-128.15) (   0.90,-131.91)  428.71                80
 05/14/2021   10:04:42   (   0.04,-128.18) (  -0.14,-127.32)   97.09                80
 05/15/2021   22:26:18   (  -0.04,-128.15) (  -1.02,-132.54)  499.51                80