Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 7 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/08/2023   01:46:43   (   0.29,-175.51) (   0.47,-174.84)   77.06                 7
 07/09/2023   14:10:37   (  -0.32,-177.07) (   0.39, 179.71)  367.46                80
 07/10/2023   13:49:38   (  -0.30,-178.09) (  -0.81,-175.89)  251.20                80
 07/12/2023   02:14:53   (   0.33,-179.65) (  -0.04, 178.62)  196.28                80
 07/13/2023   01:53:54   (   0.31, 179.33) (   1.16,-176.97)  422.24                80
 07/14/2023   14:19:01   (  -0.34, 177.77) (  -0.31, 177.57)   23.09                80
 07/16/2023   02:41:36   (   0.37, 176.22) (  -0.54, 172.07)  471.78                80
 07/17/2023   02:20:37   (   0.35, 175.21) (   0.67, 176.48)  146.36                80
 07/18/2023   14:45:43   (  -0.39, 173.65) (   0.23, 171.03)  298.89                80
 07/19/2023   14:24:44   (  -0.36, 172.64) (  -0.98, 175.44)  318.96                80
 07/21/2023   02:49:59   (   0.39, 171.09) (   0.14, 169.95)  129.73                80