Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 9 16.  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)
 09/18/2025   19:24:24   (   0.24, -89.52) (   0.09, -90.18)   74.74                80
 09/19/2025   19:08:19   (   0.24, -89.53) (   1.09, -85.64)  442.70                80
 09/21/2025   07:30:06   (  -0.24, -89.50) (   0.08, -90.91)  160.63                80
 09/22/2025   07:08:40   (  -0.24, -89.51) (  -0.92, -86.37)  356.88                80
 09/23/2025   19:30:36   (   0.24, -89.57) (  -0.24, -91.68)  240.56                80
 09/24/2025   19:14:30   (   0.24, -89.58) (   0.77, -87.14)  277.41                80
 09/26/2025   07:36:17   (  -0.23, -89.56) (   0.40, -92.41)  324.82                80
 09/27/2025   07:14:52   (  -0.24, -89.57) (  -0.61, -87.87)  192.73                80
 09/28/2025   19:36:47   (   0.23, -89.62) (  -0.55, -93.18)  405.17                80
 09/29/2025   19:20:42   (   0.24, -89.63) (   0.46, -88.64)  112.80                80