Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 9 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/04/2023   05:42:05   (  -0.39, 125.26) (   0.01, 126.94)  193.05                80
 09/05/2023   18:07:10   (   0.38, 123.71) (   0.86, 121.50)  251.10                80
 09/06/2023   17:46:09   (   0.39, 122.68) (  -0.35, 125.91)  368.75                80
 09/08/2023   06:11:24   (  -0.37, 121.06) (  -0.51, 120.43)   71.96                80
 09/10/2023   18:12:47   (   0.36, 118.45) (   0.16, 119.39)  106.77                80
 09/12/2023   06:38:02   (  -0.34, 116.83) (  -1.01, 113.90)  333.46                80
 09/13/2023   06:17:01   (  -0.35, 115.78) (   0.21, 118.31)  289.10                80
 09/14/2023   18:42:06   (   0.33, 114.18) (   0.66, 112.87)  150.45                80
 09/15/2023   18:21:05   (   0.35, 113.14) (  -0.56, 117.28)  471.94                80
 09/17/2023   06:43:39   (  -0.33, 111.49) (  -0.27, 111.79)   33.50                80