Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 2.  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)
 03/02/2023   20:23:20   (  -0.01,-104.70) (   0.06,-104.36)   38.56                80
 03/05/2023   08:26:23   (   0.00,-104.70) (   0.09,-105.10)   45.99                80
 03/06/2023   08:04:58   (  -0.00,-104.70) (  -0.95,-100.58)  470.46                80
 03/07/2023   20:26:53   (   0.00,-104.71) (  -0.27,-105.88)  133.40                80
 03/08/2023   20:10:49   (   0.00,-104.72) (   0.77,-101.35)  383.47                80
 03/10/2023   08:32:36   (  -0.00,-104.72) (   0.40,-106.63)  216.78                80
 03/11/2023   08:11:11   (  -0.00,-104.72) (  -0.59,-102.09)  299.82                80
 03/12/2023   20:33:06   (   0.00,-104.72) (  -0.61,-107.39)  304.58                80
 03/13/2023   20:17:02   (   0.00,-104.72) (   0.44,-102.87)  211.93                80
 03/15/2023   08:38:48   (  -0.01,-104.72) (   0.78,-108.13)  388.82                80