Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 9 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/01/2023   17:37:51   (   0.39, 127.90) (   0.34, 128.02)   14.92                80
 09/03/2023   06:03:06   (  -0.38, 126.28) (  -1.22, 122.54)  427.23                80
 09/04/2023   05:42:05   (  -0.39, 125.25) (  -0.01, 126.95)  193.43                80
 09/05/2023   18:07:09   (   0.38, 123.69) (   0.89, 121.50)  249.45                80
 09/06/2023   17:46:09   (   0.39, 122.66) (  -0.32, 125.92)  370.74                80
 09/08/2023   06:11:24   (  -0.37, 121.04) (  -0.49, 120.42)   70.28                80
 09/10/2023   18:12:48   (   0.36, 118.42) (   0.15, 119.39)  109.99                80
 09/12/2023   06:38:02   (  -0.34, 116.79) (  -1.00, 113.90)  330.43                80
 09/13/2023   06:17:02   (  -0.35, 115.74) (   0.22, 118.31)  292.41                80
 09/14/2023   18:42:07   (   0.33, 114.14) (   0.60, 112.85)  145.99                80