Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 2 15.  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)
 02/17/2023   08:26:22   (   0.04,-104.67) (   0.11,-105.06)   44.25                80
 02/18/2023   08:04:58   (   0.04,-104.66) (  -0.90,-100.53)  471.33                80
 02/19/2023   20:26:54   (  -0.05,-104.67) (  -0.31,-105.84)  132.45                80
 02/20/2023   20:10:50   (  -0.04,-104.67) (   0.71,-101.31)  383.56                80
 02/22/2023   08:32:37   (   0.05,-104.66) (   0.49,-106.58)  218.93                80
 02/23/2023   08:11:12   (   0.05,-104.66) (  -0.53,-102.05)  297.16                80
 02/24/2023   20:33:09   (  -0.05,-104.67) (  -0.65,-107.36)  306.12                80
 02/25/2023   20:17:04   (  -0.05,-104.67) (   0.38,-102.83)  210.25                80
 02/27/2023   08:38:52   (   0.06,-104.66) (   0.81,-108.10)  391.71                80
 02/28/2023   08:17:26   (   0.06,-104.66) (  -0.17,-103.56)  124.46                80