Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 6 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/08/2022   10:23:18   (  -0.02,-128.22) (   0.14,-128.85)   72.22                80
 06/09/2022   10:07:33   (  -0.01,-128.24) (  -0.85,-124.39)  438.51                80
 06/10/2022   22:27:20   (   0.04,-128.27) (  -0.31,-129.81)  176.36                80
 06/11/2022   22:11:36   (   0.03,-128.29) (   0.68,-125.36)  334.05                80
 06/13/2022   10:31:16   (  -0.06,-128.32) (   0.46,-130.75)  276.19                80
 06/14/2022   10:15:32   (  -0.05,-128.33) (  -0.54,-126.29)  233.41                80
 06/15/2022   22:35:18   (   0.08,-128.34) (  -0.68,-131.70)  383.66                80
 06/16/2022   22:19:34   (   0.07,-128.35) (   0.32,-127.24)  125.89                80
 06/18/2022   10:39:13   (  -0.10,-128.38) (   0.89,-132.62)  484.72                80
 06/19/2022   10:23:28   (  -0.08,-128.39) (  -0.11,-128.17)   24.75                80
 06/21/2022   22:24:51   (   0.09,-128.40) (  -0.04,-129.13)   83.34                80