Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 1 14.  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)
 01/15/2025   08:39:51   (   0.04,-104.68) (   0.78,-108.12)  391.05                80
 01/16/2025   08:18:24   (   0.04,-104.69) (  -0.22,-103.58)  126.91                80
 01/17/2025   20:40:15   (  -0.04,-104.64) (  -1.01,-108.86)  480.79                80
 01/18/2025   20:24:09   (  -0.04,-104.65) (   0.04,-104.33)   37.83                80
 01/21/2025   08:27:05   (   0.05,-104.74) (   0.12,-105.04)   34.64                80
 01/22/2025   08:05:38   (   0.05,-104.75) (  -0.88,-100.50)  483.56                80
 01/23/2025   20:27:30   (  -0.06,-104.70) (  -0.28,-105.79)  124.39                80
 01/24/2025   20:11:23   (  -0.06,-104.70) (   0.73,-101.25)  394.08                80
 01/26/2025   08:33:07   (   0.07,-104.78) (   0.42,-106.51)  196.80                80
 01/27/2025   08:11:40   (   0.07,-104.78) (  -0.59,-101.97)  321.17                80