Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2026 4 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/21/2026   21:46:23   (   0.00, -89.48) (  -0.45, -91.51)  230.84                80
 04/22/2026   21:30:07   (  -0.04, -89.48) (   0.57, -86.91)  294.09                80
 04/24/2026   09:48:59   (  -0.04, -89.50) (   0.54, -92.07)  293.49                80
 04/25/2026   09:32:44   (  -0.00, -89.50) (  -0.49, -87.47)  232.00                80
 04/26/2026   21:51:44   (   0.09, -89.49) (  -0.64, -92.66)  361.93                80
 04/27/2026   21:35:29   (   0.04, -89.50) (   0.38, -88.06)  163.92                80
 04/29/2026   09:54:21   (  -0.13, -89.52) (   0.73, -93.22)  422.49                80
 04/30/2026   09:38:06   (  -0.09, -89.53) (  -0.29, -88.62)  103.55                80
 05/01/2026   21:57:07   (   0.18, -89.53) (  -0.79, -93.82)  489.82                80
 05/02/2026   21:40:51   (   0.14, -89.54) (   0.22, -89.22)   36.19                80