Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 16.  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   08:32:59   (  -0.01,-104.40) (   0.50,-106.57)  248.54                80
 05/19/2025   08:11:36   (  -0.01,-104.39) (  -0.52,-102.05)  267.03                80
 05/20/2025   20:33:33   (   0.00,-104.41) (  -0.67,-107.35)  335.48                80
 05/21/2025   20:17:29   (   0.01,-104.42) (   0.35,-102.83)  180.66                80
 05/23/2025   08:39:19   (  -0.00,-104.40) (   0.85,-108.10)  422.75                80
 05/24/2025   08:17:55   (  -0.00,-104.39) (  -0.18,-103.58)   92.82                80
 05/26/2025   20:23:49   (   0.00,-104.41) (   0.02,-104.36)    5.11                80
 05/29/2025   08:26:54   (   0.01,-104.38) (   0.20,-105.10)   82.56                80
 05/30/2025   08:05:31   (   0.01,-104.38) (  -0.84,-100.58)  433.00                80