Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 7 18.  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)
 07/19/2025   07:27:34   (  -0.07, -89.49) (   0.27, -90.92)  163.97                80
 07/20/2025   07:11:29   (  -0.06, -89.49) (  -0.74, -86.39)  352.25                80
 07/21/2025   19:30:48   (   0.08, -89.52) (  -0.39, -91.71)  249.22                80
 07/22/2025   19:14:43   (   0.08, -89.52) (   0.62, -87.18)  267.10                80
 07/24/2025   07:33:50   (  -0.09, -89.49) (   0.57, -92.45)  337.37                80
 07/25/2025   07:17:46   (  -0.08, -89.49) (  -0.44, -87.92)  179.45                80
 07/26/2025   19:37:03   (   0.09, -89.54) (  -0.74, -93.23)  420.52                80
 07/27/2025   19:20:59   (   0.09, -89.55) (   0.28, -88.70)   96.84                80
 07/30/2025   07:24:03   (  -0.10, -89.54) (  -0.15, -89.44)   11.88                80