Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 6 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 06/17/2025   20:08:57   (  -0.01,-104.73) (   0.76,-101.42)  377.50                80
 06/19/2025   08:33:24   (   0.01,-104.73) (   0.48,-106.68)  223.66                80
 06/20/2025   08:12:01   (   0.01,-104.73) (  -0.57,-102.16)  292.32                80
 06/21/2025   20:33:58   (  -0.01,-104.73) (  -0.63,-107.47)  312.48                80
 06/22/2025   20:17:54   (  -0.00,-104.73) (   0.42,-102.95)  203.34                80
 06/24/2025   08:39:42   (  -0.00,-104.72) (   0.80,-108.21)  398.36                80
 06/25/2025   08:18:18   (  -0.01,-104.72) (  -0.25,-103.69)  117.28                80
 06/26/2025   20:40:16   (   0.01,-104.71) (  -0.95,-109.00)  487.91                80
 06/27/2025   20:24:11   (   0.01,-104.71) (   0.05,-104.46)   28.27                80
 06/30/2025   08:27:15   (  -0.01,-104.71) (   0.11,-105.21)   55.99                80