Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 9.  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)
 03/10/2023   08:32:35   (   0.02,-104.72) (   0.45,-106.61)  215.68                80
 03/11/2023   08:11:10   (   0.02,-104.73) (  -0.60,-102.09)  301.18                80
 03/12/2023   20:33:06   (  -0.02,-104.74) (  -0.59,-107.39)  301.46                80
 03/13/2023   20:17:00   (  -0.02,-104.74) (   0.42,-102.86)  215.45                80
 03/15/2023   08:38:46   (   0.03,-104.74) (   0.78,-108.12)  385.66                80
 03/16/2023   08:17:21   (   0.03,-104.74) (  -0.24,-103.59)  130.81                80
 03/17/2023   20:39:15   (  -0.04,-104.74) (  -0.99,-108.88)  472.59                80
 03/18/2023   20:23:10   (  -0.04,-104.74) (   0.03,-104.35)   44.30                80
 03/21/2023   08:26:11   (   0.04,-104.74) (   0.11,-105.09)   39.14                80
 03/22/2023   08:04:45   (   0.04,-104.75) (  -0.92,-100.56)  477.85                80