Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 7 25.  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)
 07/26/2025   19:37:03   (   0.10, -89.51) (  -0.73, -93.23)  423.57                80
 07/27/2025   19:20:59   (   0.09, -89.51) (   0.29, -88.70)   93.16                80
 07/30/2025   07:24:02   (  -0.10, -89.49) (  -0.10, -89.43)    6.00                80
 08/01/2025   19:24:35   (   0.11, -89.54) (  -0.04, -90.21)   76.63                80
 08/02/2025   19:08:30   (   0.11, -89.55) (   0.98, -85.68)  440.44                80
 08/04/2025   07:27:37   (  -0.12, -89.52) (   0.23, -90.95)  163.70                80
 08/05/2025   07:11:33   (  -0.12, -89.52) (  -0.79, -86.42)  353.39                80
 08/06/2025   19:30:50   (   0.13, -89.57) (  -0.35, -91.73)  246.06                80
 08/07/2025   19:14:46   (   0.13, -89.58) (   0.67, -87.20)  271.20                80