Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/09/2022   22:23:08   (   0.06,-128.30) (  -0.32,-130.03)  196.40                80
 01/10/2022   22:07:26   (   0.05,-128.32) (   0.69,-125.58)  312.23                80
 01/12/2022   10:27:07   (  -0.06,-128.34) (   0.53,-130.97)  300.56                80
 01/13/2022   10:11:25   (  -0.05,-128.35) (  -0.48,-126.53)  207.64                80
 01/14/2022   22:31:14   (   0.05,-128.36) (  -0.76,-131.95)  409.76                80
 01/15/2022   22:15:32   (   0.04,-128.36) (   0.25,-127.50)   98.13                80
 01/18/2022   10:16:50   (  -0.04,-128.37) (  -0.03,-128.45)    8.22                80
 01/19/2022   10:01:08   (  -0.03,-128.38) (  -1.03,-124.00)  499.11                80
 01/20/2022   22:20:57   (   0.04,-128.38) (  -0.19,-129.43)  119.32                80
 01/21/2022   22:05:15   (   0.04,-128.38) (   0.83,-124.98)  387.87                80