Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 23.  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)
 03/23/2023   20:26:41   (  -0.00,-104.75) (  -0.25,-105.87)  127.72                80
 03/24/2023   20:10:36   (  -0.00,-104.75) (   0.78,-101.34)  389.91                80
 03/26/2023   08:32:22   (   0.01,-104.76) (   0.39,-106.60)  209.78                80
 03/27/2023   08:10:55   (   0.01,-104.76) (  -0.58,-102.06)  307.64                80
 03/28/2023   20:32:50   (  -0.02,-104.78) (  -0.62,-107.36)  294.55                80
 03/29/2023   20:16:44   (  -0.02,-104.79) (   0.42,-102.83)  223.14                80
 03/31/2023   08:38:30   (   0.03,-104.79) (   0.79,-108.09)  376.00                80
 04/01/2023   08:17:04   (   0.03,-104.80) (  -0.25,-103.56)  141.55                80
 04/02/2023   20:38:58   (  -0.03,-104.81) (  -0.93,-108.86)  460.69                80
 04/03/2023   20:22:52   (  -0.03,-104.82) (   0.06,-104.32)   57.33                80