Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 22.  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)
 03/22/2023   08:04:46   (   0.00,-104.73) (  -0.95,-100.57)  474.23                80
 03/23/2023   20:26:41   (  -0.00,-104.75) (  -0.27,-105.86)  127.35                80
 03/24/2023   20:10:35   (  -0.00,-104.76) (   0.75,-101.33)  390.35                80
 03/26/2023   08:32:22   (   0.01,-104.76) (   0.41,-106.60)  209.41                80
 03/27/2023   08:10:56   (   0.01,-104.77) (  -0.62,-102.07)  308.04                80
 03/28/2023   20:32:50   (  -0.02,-104.78) (  -0.58,-107.37)  293.89                80
 03/29/2023   20:16:44   (  -0.02,-104.79) (   0.39,-102.82)  223.86                80
 03/31/2023   08:38:30   (   0.03,-104.80) (   0.77,-108.09)  375.42                80
 04/01/2023   08:17:05   (   0.03,-104.81) (  -0.27,-103.56)  142.18                80
 04/02/2023   20:38:59   (  -0.03,-104.82) (  -0.91,-108.86)  459.85                80
 04/03/2023   20:22:53   (  -0.03,-104.83) (   0.07,-104.32)   58.16                80