Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 9 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/13/2023   06:17:01   (  -0.35, 115.83) (   0.19, 118.32)  283.12                80
 09/14/2023   18:42:05   (   0.34, 114.27) (   0.67, 112.88)  159.01                80
 09/15/2023   18:21:05   (   0.35, 113.23) (  -0.55, 117.29)  462.32                80
 09/17/2023   06:43:39   (  -0.33, 111.59) (  -0.28, 111.79)   23.38                80
 09/18/2023   19:08:44   (   0.31, 110.00) (   1.14, 106.35)  416.35                80
 09/19/2023   18:47:43   (   0.33, 108.96) (  -0.09, 110.76)  205.65                80
 09/21/2023   07:12:56   (  -0.31, 107.33) (  -0.78, 105.28)  233.75                80
 09/22/2023   06:51:56   (  -0.32, 106.27) (   0.45, 109.69)  389.44                80
 09/23/2023   19:17:00   (   0.30, 104.67) (   0.40, 104.24)   49.52                80
 09/25/2023   07:39:33   (  -0.27, 103.05) (  -1.26,  98.76)  489.60                80
 09/26/2023   07:18:33   (  -0.29, 101.99) (  -0.01, 103.16)  134.35                80