Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 9 29.  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)
 09/29/2023   08:24:48   (  -0.00,-104.71) (   0.05,-105.02)   34.43                80
 09/30/2023   08:03:22   (  -0.00,-104.71) (  -0.93,-100.48)  482.27                80
 10/01/2023   20:25:18   (  -0.00,-104.69) (  -0.25,-105.78)  124.37                80
 10/02/2023   20:09:14   (  -0.00,-104.70) (   0.79,-101.26)  392.55                80
 10/04/2023   08:31:00   (   0.00,-104.73) (   0.43,-106.52)  204.53                80
 10/05/2023   08:09:36   (   0.00,-104.73) (  -0.62,-101.99)  312.05                80
 10/06/2023   20:31:31   (   0.00,-104.70) (  -0.60,-107.29)  295.17                80
 10/07/2023   20:15:27   (  -0.00,-104.71) (   0.45,-102.76)  221.82                80
 10/09/2023   08:37:13   (   0.00,-104.74) (   0.76,-108.02)  374.43                80
 10/10/2023   08:15:48   (   0.00,-104.75) (  -0.29,-103.50)  142.54                80
 10/11/2023   20:37:44   (  -0.01,-104.72) (  -0.92,-108.80)  464.35                80
 10/12/2023   20:21:38   (  -0.00,-104.73) (   0.08,-104.26)   53.00                80