Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 9 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)
 09/13/2022   10:39:18   (   0.33,-127.67) (   1.14,-131.10)  391.23                80
 09/14/2022   10:18:14   (   0.34,-127.64) (   0.09,-126.65)  114.09                80
 09/16/2022   22:22:14   (  -0.33,-127.52) (  -0.34,-127.59)    7.87                80
 09/17/2022   22:06:28   (  -0.33,-127.49) (   0.65,-123.12)  497.50                80
 09/19/2022   10:28:46   (   0.31,-127.49) (   0.55,-128.49)  114.77                80
 09/20/2022   10:07:40   (   0.32,-127.45) (  -0.44,-124.03)  389.72                80
 09/21/2022   22:30:05   (  -0.30,-127.34) (  -0.79,-129.43)  239.45                80
 09/22/2022   22:14:20   (  -0.30,-127.30) (   0.21,-124.97)  265.49                80
 09/24/2022   10:33:58   (   0.28,-127.31) (   0.95,-130.36)  346.20                80
 09/25/2022   10:18:13   (   0.29,-127.27) (  -0.05,-125.89)  158.16                80
 09/26/2022   22:37:57   (  -0.27,-127.14) (  -1.22,-131.29)  472.63                80