Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 6 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2022   22:22:03   (   0.01,-128.15) (   0.06,-127.93)   25.38                80
 06/08/2022   10:23:18   (  -0.02,-128.22) (   0.15,-128.85)   72.76                80
 06/09/2022   10:07:33   (  -0.01,-128.24) (  -0.85,-124.39)  437.83                80
 06/10/2022   22:27:20   (   0.04,-128.26) (  -0.31,-129.81)  177.40                80
 06/11/2022   22:11:36   (   0.03,-128.28) (   0.69,-125.36)  332.83                80
 06/13/2022   10:31:15   (  -0.06,-128.31) (   0.51,-130.74)  277.56                80
 06/14/2022   10:15:31   (  -0.05,-128.32) (  -0.49,-126.28)  231.90                80
 06/15/2022   22:35:18   (   0.08,-128.32) (  -0.67,-131.70)  385.45                80
 06/16/2022   22:19:34   (   0.07,-128.33) (   0.34,-127.25)  123.97                80
 06/18/2022   10:39:13   (  -0.10,-128.36) (   0.87,-132.63)  486.87                80