Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/12/2022   10:27:07   (  -0.06,-128.33) (   0.53,-130.97)  300.87                80
 01/13/2022   10:11:25   (  -0.05,-128.34) (  -0.48,-126.53)  207.17                80
 01/14/2022   22:31:14   (   0.05,-128.35) (  -0.76,-131.95)  410.48                80
 01/15/2022   22:15:32   (   0.04,-128.35) (   0.25,-127.50)   97.27                80
 01/18/2022   10:16:50   (  -0.04,-128.36) (  -0.02,-128.45)    9.43                80
 01/19/2022   10:01:08   (  -0.03,-128.36) (  -1.03,-124.00)  497.73                80
 01/20/2022   22:20:57   (   0.04,-128.36) (  -0.19,-129.42)  120.97                80
 01/21/2022   22:05:15   (   0.04,-128.36) (   0.82,-124.98)  386.07                80
 01/23/2022   10:24:56   (  -0.04,-128.36) (   0.42,-130.37)  228.80                80
 01/24/2022   10:09:14   (  -0.04,-128.36) (  -0.59,-125.92)  277.88                80
 01/25/2022   22:29:03   (   0.04,-128.34) (  -0.62,-131.34)  341.77                80