Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 9 22.  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)
 09/23/2025   19:30:35   (   0.24, -89.53) (  -0.27, -91.67)  244.21                80
 09/24/2025   19:14:31   (   0.24, -89.54) (   0.80, -87.15)  273.26                80
 09/26/2025   07:36:17   (  -0.23, -89.51) (   0.42, -92.40)  329.46                80
 09/27/2025   07:14:51   (  -0.24, -89.52) (  -0.59, -87.87)  187.59                80
 09/28/2025   19:39:27   (   0.23, -89.56) (  -0.56, -93.17)  411.35                80
 09/29/2025   19:20:41   (   0.24, -89.57) (   0.45, -88.64)  106.10                80
 10/01/2025   07:42:27   (  -0.23, -89.55) (   0.75, -93.89)  495.68                80
 10/02/2025   07:21:02   (  -0.24, -89.55) (  -0.26, -89.36)   21.69                80
 10/04/2025   19:26:52   (   0.24, -89.61) (   0.14, -90.13)   59.27                80
 10/05/2025   19:05:26   (   0.25, -89.62) (   1.16, -85.60)  458.84                80