Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 11.  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)
 03/11/2023   08:11:10   (   0.02,-104.73) (  -0.57,-102.08)  301.31                80
 03/12/2023   20:33:05   (  -0.02,-104.74) (  -0.63,-107.38)  301.26                80
 03/13/2023   20:17:00   (  -0.03,-104.75) (   0.38,-102.85)  215.62                80
 03/15/2023   08:38:46   (   0.03,-104.74) (   0.82,-108.11)  385.53                80
 03/16/2023   08:17:20   (   0.04,-104.74) (  -0.19,-103.58)  130.97                80
 03/17/2023   20:39:16   (  -0.04,-104.74) (  -0.97,-108.89)  472.39                80
 03/18/2023   20:23:10   (  -0.04,-104.75) (   0.05,-104.36)   44.47                80
 03/21/2023   08:26:11   (   0.05,-104.75) (   0.10,-105.09)   39.00                80
 03/22/2023   08:04:45   (   0.04,-104.75) (  -0.87,-100.55)  478.02                80
 03/23/2023   20:26:40   (  -0.05,-104.76) (  -0.27,-105.86)  124.59                80
 03/24/2023   20:10:33   (  -0.05,-104.77) (   0.71,-101.32)  392.78                80