Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 6 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2022   10:31:16   (  -0.06,-128.33) (   0.47,-130.74)  275.11                80
 06/14/2022   10:15:31   (  -0.05,-128.34) (  -0.53,-126.29)  234.73                80
 06/15/2022   22:35:18   (   0.08,-128.35) (  -0.69,-131.70)  381.67                80
 06/16/2022   22:19:33   (   0.07,-128.37) (   0.31,-127.24)  128.21                80
 06/18/2022   10:39:14   (  -0.10,-128.40) (   0.83,-132.63)  482.13                80
 06/19/2022   10:23:28   (  -0.08,-128.41) (  -0.11,-128.17)   27.68                80
 06/21/2022   22:24:51   (   0.10,-128.43) (  -0.04,-129.13)   79.60                80
 06/22/2022   22:09:06   (   0.08,-128.44) (   0.96,-124.67)  430.23                80
 06/24/2022   10:28:46   (  -0.12,-128.48) (   0.23,-130.06)  180.19                80
 06/25/2022   10:13:01   (  -0.10,-128.48) (  -0.77,-125.60)  328.99                80
 06/26/2022   22:32:48   (   0.14,-128.47) (  -0.44,-131.01)  289.43                80