Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 17.  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)
 05/18/2025   08:33:00   (  -0.01,-104.40) (   0.47,-106.58)  248.43                80
 05/19/2025   08:11:36   (  -0.01,-104.39) (  -0.56,-102.05)  267.14                80
 05/20/2025   20:33:34   (   0.01,-104.41) (  -0.63,-107.36)  335.42                80
 05/21/2025   20:17:29   (   0.01,-104.42) (   0.33,-102.82)  180.74                80
 05/23/2025   08:39:19   (  -0.00,-104.40) (   0.80,-108.11)  422.65                80
 05/24/2025   08:17:55   (  -0.01,-104.39) (  -0.17,-103.57)   92.96                80
 05/26/2025   20:23:49   (   0.00,-104.40) (   0.01,-104.36)    5.12                80
 05/29/2025   08:26:55   (   0.00,-104.38) (   0.14,-105.11)   82.51                80
 05/30/2025   08:05:30   (   0.01,-104.38) (  -0.84,-100.58)  433.09                80