Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 9 11.  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   10:39:19   (   0.33,-127.68) (   1.12,-131.10)  390.34                80
 09/14/2022   10:18:13   (   0.34,-127.65) (   0.13,-126.64)  115.10                80
 09/16/2022   22:22:14   (  -0.33,-127.52) (  -0.32,-127.59)    7.75                80
 09/17/2022   22:06:29   (  -0.33,-127.49) (   0.67,-123.13)  498.14                80
 09/19/2022   10:28:46   (   0.31,-127.51) (   0.54,-128.50)  113.03                80
 09/20/2022   10:07:40   (   0.32,-127.47) (  -0.46,-124.04)  391.60                80
 09/21/2022   22:30:06   (  -0.30,-127.35) (  -0.76,-129.44)  238.19                80
 09/22/2022   22:14:20   (  -0.30,-127.32) (   0.23,-124.98)  266.88                80
 09/24/2022   10:33:57   (   0.28,-127.34) (   0.98,-130.35)  343.79                80
 09/25/2022   10:15:32   (   0.29,-127.30) (  -0.01,-125.89)  160.70                80