Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 8.  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)
 03/08/2023   20:10:49   (   0.00,-104.72) (   0.76,-101.35)  384.69                80
 03/10/2023   08:32:35   (  -0.00,-104.72) (   0.45,-106.61)  216.34                80
 03/11/2023   08:11:10   (  -0.00,-104.72) (  -0.61,-102.09)  300.38                80
 03/12/2023   20:33:06   (  -0.00,-104.73) (  -0.57,-107.40)  302.86                80
 03/13/2023   20:17:00   (  -0.00,-104.73) (   0.44,-102.86)  213.86                80
 03/15/2023   08:38:46   (   0.01,-104.72) (   0.74,-108.13)  387.31                80
 03/16/2023   08:17:20   (   0.01,-104.72) (  -0.22,-103.58)  129.02                80
 03/17/2023   20:39:15   (  -0.01,-104.72) (  -0.94,-108.89)  475.00                80
 03/18/2023   20:23:10   (  -0.01,-104.72) (   0.09,-104.36)   41.74                80
 03/21/2023   08:26:10   (   0.01,-104.72) (   0.09,-105.09)   41.99                80
 03/22/2023   08:04:44   (   0.00,-104.72) (  -0.96,-100.56)  474.87                80