Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 2 3.  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)
 02/05/2023   08:49:01   (   0.04,-109.02) (   0.57,-111.29)  258.15                80
 02/06/2023   08:32:51   (   0.04,-107.87) (  -0.21,-106.70)  133.46                80
 02/08/2023   20:33:10   (  -0.05,-104.97) (  -0.57,-107.33)  269.40                80
 02/09/2023   20:17:01   (  -0.05,-103.82) (   0.22,-102.75)  122.43                80
 02/12/2023   08:17:11   (   0.05,-100.91) (   0.57,-103.34)  277.42                80
 02/13/2023   08:01:00   (   0.05, -99.75) (  -0.16, -98.75)  114.16                80
 02/15/2023   20:01:18   (  -0.06, -96.84) (  -0.66, -99.37)  289.64                80
 02/16/2023   19:45:09   (  -0.07, -95.68) (   0.14, -94.79)  101.81                80