Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 14.  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)
 03/15/2023   08:38:46   (   0.02,-104.74) (   0.80,-108.12)  385.20                80
 03/16/2023   08:17:21   (   0.02,-104.75) (  -0.21,-103.58)  131.53                80
 03/17/2023   20:39:16   (  -0.02,-104.76) (  -0.97,-108.89)  471.10                80
 03/18/2023   20:23:11   (  -0.02,-104.77) (   0.05,-104.36)   46.00                80
 03/21/2023   08:26:11   (   0.02,-104.77) (   0.11,-105.09)   37.68                80
 03/22/2023   08:04:46   (   0.01,-104.77) (  -0.91,-100.56)  479.58                80
 03/23/2023   20:26:41   (  -0.02,-104.79) (  -0.23,-105.87)  122.18                80
 03/24/2023   20:10:35   (  -0.02,-104.80) (   0.74,-101.33)  395.49                80
 03/26/2023   08:32:21   (   0.02,-104.80) (   0.43,-106.60)  204.43                80
 03/27/2023   08:10:56   (   0.02,-104.81) (  -0.61,-102.07)  312.80                80