Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 11 5.  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)
 11/06/2023   08:09:56   (  -0.00,-104.70) (  -0.56,-102.08)  298.56                80
 11/07/2023   20:31:55   (   0.00,-104.69) (  -0.58,-107.40)  307.73                80
 11/08/2023   20:15:52   (  -0.00,-104.70) (   0.43,-102.87)  209.14                80
 11/10/2023   08:37:41   (   0.00,-104.74) (   0.76,-108.15)  388.46                80
 11/11/2023   08:16:18   (   0.00,-104.74) (  -0.25,-103.62)  128.12                80
 11/12/2023   20:38:16   (  -0.00,-104.73) (  -0.92,-108.94)  478.51                80
 11/13/2023   20:22:11   (  -0.00,-104.74) (   0.05,-104.40)   38.29                80
 11/16/2023   08:25:17   (   0.02,-104.77) (   0.10,-105.15)   43.05                80
 11/17/2023   08:03:54   (   0.02,-104.77) (  -0.93,-100.63)  473.02                80
 11/18/2023   20:25:51   (  -0.01,-104.75) (  -0.26,-105.93)  134.60                80