Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 9 8.  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)
 09/08/2025   19:14:39   (   0.22, -89.52) (   0.73, -87.18)  266.90                80
 09/10/2025   07:36:27   (  -0.22, -89.49) (   0.46, -92.44)  337.33                80
 09/11/2025   07:15:02   (  -0.22, -89.49) (  -0.59, -87.92)  179.39                80
 09/12/2025   19:36:56   (   0.22, -89.53) (  -0.63, -93.21)  420.15                80
 09/13/2025   19:20:52   (   0.23, -89.53) (   0.43, -88.68)   96.71                80
 09/16/2025   07:21:14   (  -0.23, -89.50) (  -0.24, -89.41)    9.66                80
 09/18/2025   19:24:24   (   0.24, -89.55) (   0.09, -90.18)   72.14                80
 09/19/2025   19:08:18   (   0.24, -89.56) (   1.09, -85.65)  445.68                80
 09/21/2025   07:30:06   (  -0.24, -89.55) (   0.08, -90.91)  156.10                80
 09/22/2025   07:08:41   (  -0.24, -89.56) (  -0.98, -86.39)  361.82                80