Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 29.  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)
 05/30/2025   08:05:31   (  -0.01,-104.40) (  -0.86,-100.58)  435.15                80
 05/31/2025   20:27:28   (   0.00,-104.41) (  -0.34,-105.89)  168.11                80
 06/01/2025   20:11:25   (   0.00,-104.42) (   0.70,-101.36)  348.19                80
 06/03/2025   08:33:14   (  -0.00,-104.41) (   0.47,-106.64)  253.97                80
 06/04/2025   08:11:49   (  -0.00,-104.41) (  -0.51,-102.11)  262.17                80
 06/05/2025   20:33:47   (   0.00,-104.42) (  -0.69,-107.41)  341.17                80
 06/06/2025   20:17:43   (   0.00,-104.43) (   0.35,-102.89)  175.39                80
 06/08/2025   08:39:32   (  -0.00,-104.43) (   0.86,-108.16)  425.88                80
 06/09/2025   08:18:08   (   0.00,-104.43) (  -0.18,-103.64)   90.18                80
 06/11/2025   20:24:01   (  -0.01,-104.43) (  -0.03,-104.41)    3.40                80