Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2025 6 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/20/2025   10:58:28   (   0.27,  61.27) (   0.46,  62.14)   99.36                80
 06/21/2025   23:17:27   (  -0.29,  61.31) (   0.72,  56.95)  497.72                80
 06/22/2025   23:01:18   (  -0.29,  61.31) (  -0.32,  61.52)   23.61                80
 06/25/2025   11:01:36   (   0.31,  61.27) (   0.20,  60.86)   47.33                80
 06/26/2025   10:45:27   (   0.30,  61.28) (   1.25,  65.43)  473.82                80
 06/27/2025   23:04:26   (  -0.33,  61.32) (  -0.05,  60.24)  123.99                80
 06/28/2025   22:48:17   (  -0.32,  61.33) (  -1.10,  64.81)  397.09                80
 06/30/2025   11:07:25   (   0.34,  61.29) (  -0.05,  59.58)  194.86                80
 07/01/2025   10:51:16   (   0.33,  61.29) (   1.01,  64.15)  326.46                80
 07/02/2025   23:10:15   (  -0.35,  61.33) (   0.19,  58.96)  270.94                80