Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 9 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2023   18:42:06   (   0.34, 114.27) (   0.66, 112.87)  159.57                80
 09/15/2023   18:21:05   (   0.35, 113.24) (  -0.56, 117.28)  461.52                80
 09/17/2023   06:43:39   (  -0.33, 111.60) (  -0.27, 111.79)   22.41                80
 09/18/2023   19:08:44   (   0.31, 110.01) (   1.13, 106.35)  417.82                80
 09/19/2023   18:47:43   (   0.33, 108.97) (  -0.10, 110.76)  203.97                80
 09/21/2023   07:12:57   (  -0.31, 107.34) (  -0.77, 105.28)  235.73                80
 09/22/2023   06:51:56   (  -0.32, 106.29) (   0.46, 109.68)  387.24                80
 09/23/2023   19:17:00   (   0.30, 104.70) (   0.39, 104.24)   52.12                80
 09/25/2023   07:39:34   (  -0.27, 103.07) (  -1.25,  98.76)  492.50                80
 09/26/2023   07:18:33   (  -0.29, 102.02) (  -0.01, 103.16)  131.25                80
 09/27/2023   19:43:38   (   0.26, 100.40) (   0.86,  97.72)  305.50                80