Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 7 20.  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)
 07/21/2025   19:30:48   (   0.08, -89.52) (  -0.38, -91.71)  249.00                80
 07/22/2025   19:14:43   (   0.08, -89.52) (   0.63, -87.18)  267.32                80
 07/24/2025   07:33:50   (  -0.09, -89.49) (   0.57, -92.45)  337.48                80
 07/25/2025   07:17:46   (  -0.09, -89.49) (  -0.44, -87.92)  179.35                80
 07/26/2025   19:37:03   (   0.10, -89.54) (  -0.74, -93.23)  420.26                80
 07/27/2025   19:20:59   (   0.09, -89.55) (   0.27, -88.70)   97.10                80
 07/30/2025   07:24:03   (  -0.10, -89.54) (  -0.14, -89.44)   11.65                80
 08/01/2025   19:24:35   (   0.10, -89.61) (  -0.00, -90.22)   69.52                80
 08/02/2025   19:08:31   (   0.10, -89.62) (   1.01, -85.69)  448.27                80