Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 1 31.  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)
 02/01/2023   21:05:01   (  -0.04,-113.11) (  -0.54,-115.28)  247.99                80
 02/02/2023   20:48:51   (  -0.04,-111.95) (   0.24,-110.69)  143.31                80
 02/05/2023   08:49:01   (   0.05,-109.03) (   0.57,-111.29)  257.57                80
 02/06/2023   08:32:52   (   0.05,-107.87) (  -0.21,-106.70)  133.70                80
 02/08/2023   20:33:10   (  -0.06,-104.96) (  -0.58,-107.33)  270.43                80
 02/09/2023   20:17:00   (  -0.06,-103.81) (   0.15,-102.74)  121.07                80
 02/12/2023   08:17:11   (   0.06,-100.89) (   0.59,-103.34)  279.27                80
 02/13/2023   08:01:00   (   0.06, -99.73) (  -0.14, -98.75)  111.96                80