Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 24.  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)
 04/27/2025   08:26:19   (  -0.01,-104.36) (   0.14,-104.95)   68.12                80
 04/28/2025   08:04:57   (  -0.02,-104.36) (  -0.92,-100.44)  447.19                80
 04/29/2025   20:26:54   (   0.02,-104.38) (  -0.31,-105.74)  155.35                80
 04/30/2025   20:10:52   (   0.03,-104.38) (   0.75,-101.23)  360.22                80
 05/02/2025   08:32:42   (  -0.03,-104.35) (   0.43,-106.51)  244.93                80
 05/03/2025   08:11:19   (  -0.03,-104.35) (  -0.57,-101.98)  270.53                80
 05/04/2025   20:33:16   (   0.02,-104.37) (  -0.64,-107.28)  331.87                80
 05/05/2025   20:17:12   (   0.02,-104.38) (   0.37,-102.76)  184.32                80
 05/07/2025   08:39:03   (  -0.02,-104.36) (   0.80,-108.04)  419.17                80
 05/08/2025   08:17:39   (  -0.02,-104.36) (  -0.21,-103.51)   96.84                80