Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/11/2021   22:13:11   (  -0.10,-128.44) (   0.13,-127.36)  122.74                80
 11/13/2021   10:31:57   (   0.07,-128.44) (   1.00,-132.54)  466.77                80
 11/14/2021   10:15:39   (   0.08,-128.44) (  -0.03,-127.94)   56.83                80
 11/16/2021   22:15:35   (  -0.07,-128.43) (  -0.10,-128.55)   14.65                80
 11/19/2021   10:18:03   (   0.06,-128.41) (   0.20,-129.13)   81.40                80
 11/20/2021   10:01:44   (   0.08,-128.40) (  -0.78,-124.53)  441.58                80
 11/21/2021   22:20:39   (  -0.05,-128.38) (  -0.37,-129.74)  154.75                80
 11/22/2021   22:04:21   (  -0.06,-128.37) (   0.67,-125.14)  367.87                80
 11/24/2021   10:23:07   (   0.04,-128.35) (   0.48,-130.31)  223.48                80