Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 12 4.  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)
 12/05/2025   07:21:04   (   0.07, -89.50) (   0.03, -89.24)   29.60                80
 12/07/2025   19:27:00   (  -0.10, -89.49) (  -0.22, -90.02)   60.46                80
 12/08/2025   19:05:37   (  -0.06, -89.50) (   0.83, -85.51)  455.09                80
 12/10/2025   07:30:07   (   0.12, -89.51) (   0.38, -90.77)  142.90                80
 12/11/2025   07:08:44   (   0.09, -89.52) (  -0.67, -86.25)  372.55                80
 12/12/2025   19:33:21   (  -0.14, -89.52) (  -0.60, -91.55)  231.38                80
 12/13/2025   19:11:59   (  -0.11, -89.53) (   0.45, -87.03)  285.12                80
 12/15/2025   07:36:28   (   0.17, -89.56) (   0.76, -92.30)  310.85                80
 12/16/2025   07:15:05   (   0.14, -89.57) (  -0.24, -87.77)  205.16                80
 12/17/2025   19:39:42   (  -0.20, -89.56) (  -1.00, -93.06)  399.11                80