Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 7 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/03/2023   01:39:45   (   0.28,-170.32) (  -0.28,-172.69)  270.27                80
 07/04/2023   01:18:46   (   0.25,-171.35) (   0.92,-168.28)  348.98                80
 07/05/2023   13:43:54   (  -0.29,-172.92) (  -0.10,-173.75)   94.87                80
 07/08/2023   01:45:30   (   0.29,-175.50) (   0.45,-174.83)   76.32                80
 07/09/2023   14:10:37   (  -0.32,-177.07) (   0.42, 179.71)  367.35                80
 07/10/2023   13:49:38   (  -0.29,-178.09) (  -0.78,-175.88)  251.26                80
 07/12/2023   02:14:53   (   0.33,-179.65) (  -0.07, 178.63)  197.15                80
 07/13/2023   01:53:53   (   0.31, 179.34) (   1.13,-176.97)  421.29                80
 07/14/2023   14:19:02   (  -0.34, 177.77) (  -0.32, 177.56)   23.49                80