Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 10 27.  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)
 10/27/2023   20:37:53   (  -0.00,-104.66) (  -0.91,-108.84)  475.49                80
 10/28/2023   20:21:50   (   0.00,-104.67) (   0.07,-104.31)   40.40                80
 10/31/2023   08:24:57   (   0.00,-104.69) (   0.11,-105.06)   42.72                80
 11/01/2023   08:03:34   (   0.00,-104.69) (  -0.93,-100.54)  472.99                80
 11/02/2023   20:25:33   (  -0.01,-104.67) (  -0.29,-105.85)  135.21                80
 11/03/2023   20:09:29   (  -0.01,-104.67) (   0.70,-101.32)  380.83                80
 11/05/2023   08:31:20   (   0.02,-104.70) (   0.46,-106.60)  217.34                80
 11/06/2023   08:09:56   (   0.02,-104.70) (  -0.54,-102.08)  298.58                80
 11/07/2023   20:31:55   (  -0.02,-104.68) (  -0.61,-107.40)  309.55                80
 11/08/2023   20:15:52   (  -0.02,-104.68) (   0.39,-102.87)  206.81                80