Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 11/21/2025   19:25:15   (   0.03, -89.50) (   0.00, -89.98)   53.08                 0
 11/22/2025   19:05:11   (   0.06, -89.50) (   0.97, -85.44)  462.82                80
 11/24/2025   07:29:40   (  -0.00, -89.50) (   0.26, -90.71)  137.67                80
 11/25/2025   07:08:18   (  -0.04, -89.50) (  -0.76, -86.19)  377.09                80
 11/26/2025   19:32:57   (  -0.01, -89.50) (  -0.46, -91.50)  226.91                80
 11/27/2025   19:11:35   (   0.02, -89.51) (   0.57, -86.97)  288.73                80
 11/29/2025   07:36:04   (   0.04, -89.52) (   0.65, -92.24)  310.09                80
 11/30/2025   07:14:42   (   0.01, -89.52) (  -0.38, -87.72)  205.21                80
 12/01/2025   19:39:21   (  -0.06, -89.53) (  -0.83, -93.03)  398.87                80
 12/02/2025   19:17:58   (  -0.04, -89.53) (   0.21, -88.51)  117.02                80
 12/04/2025   07:42:28   (   0.09, -89.55) (   1.02, -93.78)  480.94                80
 12/05/2025   07:21:05   (   0.07, -89.55) (  -0.01, -89.26)   34.26                80