Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 21.  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)
 03/21/2023   08:26:12   (   0.00,-104.74) (   0.05,-105.10)   40.65                80
 03/22/2023   08:04:46   (   0.00,-104.74) (  -0.91,-100.56)  476.16                80
 03/23/2023   20:26:41   (  -0.00,-104.76) (  -0.25,-105.87)  126.24                80
 03/24/2023   20:10:36   (   0.00,-104.76) (   0.78,-101.34)  390.72                80
 03/26/2023   08:32:22   (  -0.00,-104.75) (   0.39,-106.60)  210.48                80
 03/27/2023   08:10:56   (  -0.01,-104.75) (  -0.63,-102.07)  306.14                80
 03/28/2023   20:32:51   (   0.00,-104.76) (  -0.57,-107.37)  296.78                80
 03/29/2023   20:16:44   (   0.00,-104.77) (   0.41,-102.83)  220.26                80
 03/31/2023   08:38:31   (   0.00,-104.76) (   0.75,-108.10)  380.27                80
 04/01/2023   08:17:05   (   0.00,-104.76) (  -0.28,-103.57)  136.59                80
 04/02/2023   20:38:59   (  -0.00,-104.77) (  -0.90,-108.87)  466.30                80
 04/03/2023   20:22:53   (  -0.00,-104.78) (   0.08,-104.33)   51.01                80