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) (  -0.51,-115.28)  248.03                80
 02/02/2023   20:48:52   (  -0.04,-111.95) (   0.27,-110.70)  143.33                80
 02/05/2023   08:49:01   (   0.05,-109.03) (   0.54,-111.29)  257.71                80
 02/06/2023   08:32:51   (   0.05,-107.87) (  -0.18,-106.69)  133.62                80
 02/08/2023   20:33:10   (  -0.06,-104.96) (  -0.60,-107.33)  270.31                80
 02/09/2023   20:17:00   (  -0.06,-103.81) (   0.18,-102.74)  121.17                80
 02/12/2023   08:17:10   (   0.06,-100.89) (   0.61,-103.34)  279.23                80
 02/13/2023   08:01:01   (   0.06, -99.73) (  -0.18, -98.75)  112.03                80