Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 2 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/01/2021   10:10:56   (  -0.16,-128.23) (  -0.05,-128.69)   52.49                80
 03/02/2021   09:49:19   (  -0.16,-128.24) (  -1.06,-124.10)  471.80                80
 03/03/2021   22:10:57   (   0.15,-128.30) (  -0.05,-129.33)  116.60                80
 03/04/2021   21:54:40   (   0.16,-128.31) (   0.96,-124.74)  407.94                80
 03/06/2021   10:16:07   (  -0.14,-128.31) (   0.23,-129.91)  182.71                80
 03/07/2021   09:54:30   (  -0.15,-128.32) (  -0.84,-125.33)  340.81                80
 03/08/2021   22:16:07   (   0.13,-128.35) (  -0.38,-130.54)  249.44                80
 03/09/2021   21:59:50   (   0.13,-128.37) (   0.69,-125.96)  274.61                80
 03/11/2021   10:21:18   (  -0.12,-128.36) (   0.51,-131.13)  315.62                80
 03/12/2021   09:59:41   (  -0.13,-128.37) (  -0.56,-126.55)  207.71                80