Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 12.  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)
 04/13/2025   20:27:03   (   0.03,-104.41) (  -0.29,-105.77)  155.90                80
 04/14/2025   20:10:57   (   0.03,-104.41) (   0.71,-101.23)  361.14                80
 04/16/2025   08:32:42   (  -0.02,-104.37) (   0.47,-106.49)  242.15                80
 04/17/2025   08:11:16   (  -0.02,-104.37) (  -0.54,-101.95)  274.46                80
 04/18/2025   20:33:10   (   0.02,-104.39) (  -0.59,-107.26)  326.09                80
 04/19/2025   20:17:04   (   0.02,-104.39) (   0.42,-102.72)  190.83                80
 04/21/2025   08:38:48   (  -0.01,-104.35) (   0.81,-107.97)  412.16                80
 04/22/2025   08:17:21   (  -0.01,-104.35) (  -0.20,-103.43)  104.49                80
 04/23/2025   20:39:15   (   0.00,-104.37) (  -0.96,-108.72)  496.25                80
 04/24/2025   20:23:08   (   0.01,-104.37) (   0.06,-104.19)   20.91                80