Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 6 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/10/2022   22:27:20   (   0.04,-128.27) (  -0.31,-129.81)  175.88                80
 06/11/2022   22:11:36   (   0.03,-128.29) (   0.69,-125.36)  334.66                80
 06/13/2022   10:31:15   (  -0.06,-128.33) (   0.51,-130.74)  275.47                80
 06/14/2022   10:15:31   (  -0.05,-128.34) (  -0.49,-126.28)  234.26                80
 06/15/2022   22:35:18   (   0.08,-128.35) (  -0.67,-131.70)  382.51                80
 06/16/2022   22:19:34   (   0.07,-128.36) (   0.33,-127.25)  127.20                80
 06/18/2022   10:39:13   (  -0.10,-128.39) (   0.86,-132.63)  483.23                80
 06/19/2022   10:23:28   (  -0.08,-128.40) (  -0.14,-128.17)   26.29                80
 06/21/2022   22:24:50   (   0.09,-128.41) (  -0.06,-129.13)   81.24                80
 06/22/2022   22:09:06   (   0.08,-128.42) (   0.94,-124.67)  428.41                80