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   08:39:50   (   0.04,-104.69) (   0.83,-108.11)  390.74                80
 01/16/2025   08:18:24   (   0.04,-104.69) (  -0.22,-103.58)  127.20                80
 01/17/2025   20:40:15   (  -0.04,-104.65) (  -1.01,-108.86)  480.57                80
 01/18/2025   20:24:09   (  -0.04,-104.66) (   0.05,-104.33)   38.04                80
 01/21/2025   08:27:06   (   0.05,-104.74) (   0.12,-105.04)   34.47                80
 01/22/2025   08:05:38   (   0.05,-104.75) (  -0.88,-100.50)  483.70                80
 01/23/2025   20:27:30   (  -0.06,-104.70) (  -0.28,-105.79)  124.32                80
 01/24/2025   20:11:23   (  -0.06,-104.70) (   0.73,-101.25)  394.12                80
 01/26/2025   08:33:07   (   0.07,-104.78) (   0.43,-106.51)  196.76                80
 01/27/2025   08:11:40   (   0.07,-104.78) (  -0.58,-101.97)  321.18                80