Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 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)
 01/08/2022   10:03:18   (  -0.05,-128.28) (  -0.86,-124.60)  420.01                80
 01/09/2022   22:23:08   (   0.06,-128.31) (  -0.34,-130.03)  196.33                80
 01/10/2022   22:07:26   (   0.05,-128.32) (   0.67,-125.58)  312.34                80
 01/12/2022   10:27:07   (  -0.06,-128.34) (   0.55,-130.97)  300.37                80
 01/13/2022   10:11:24   (  -0.05,-128.35) (  -0.46,-126.52)  207.88                80
 01/14/2022   22:31:14   (   0.05,-128.36) (  -0.79,-131.94)  409.42                80
 01/15/2022   22:15:31   (   0.04,-128.37) (   0.22,-127.50)   98.54                80
 01/18/2022   10:16:50   (  -0.04,-128.38) (  -0.00,-128.44)    8.11                80
 01/19/2022   10:01:08   (  -0.03,-128.38) (  -1.01,-124.00)  499.68                80
 01/20/2022   22:20:57   (   0.04,-128.38) (  -0.21,-129.42)  118.66                80
 01/21/2022   22:05:14   (   0.04,-128.39) (   0.80,-124.98)  388.59                80