Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 5 24.  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)
 05/25/2023   08:04:03   (  -0.00,-104.71) (  -0.96,-100.50)  480.44                80
 05/26/2023   20:25:59   (   0.00,-104.71) (  -0.25,-105.81)  125.11                80
 05/27/2023   20:09:55   (   0.01,-104.71) (   0.77,-101.28)  391.18                80
 05/29/2023   08:31:43   (  -0.01,-104.72) (   0.38,-106.56)  208.91                80
 05/30/2023   08:10:18   (  -0.01,-104.72) (  -0.64,-102.03)  307.20                80
 05/31/2023   20:32:15   (   0.01,-104.71) (  -0.56,-107.33)  298.65                80
 06/01/2023   20:16:10   (   0.01,-104.71) (   0.46,-102.80)  217.55                80
 06/03/2023   08:37:58   (  -0.02,-104.72) (   0.74,-108.07)  382.56                80
 06/04/2023   08:16:33   (  -0.02,-104.71) (  -0.29,-103.54)  133.01                80
 06/05/2023   20:38:29   (   0.03,-104.69) (  -0.90,-108.85)  474.22                80
 06/06/2023   20:22:25   (   0.03,-104.68) (   0.12,-104.32)   41.54                80