Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 9 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 09/08/2023   06:36:46   (   0.06, -75.21) (   0.65, -77.90)  306.55                80
 09/09/2023   06:15:21   (   0.06, -75.21) (  -0.35, -73.37)  209.84                80
 09/10/2023   18:37:18   (  -0.05, -75.23) (  -0.81, -78.68)  393.16                80
 09/11/2023   18:21:14   (  -0.05, -75.24) (   0.20, -74.15)  123.81                80
 09/13/2023   06:43:02   (   0.04, -75.24) (   0.97, -79.43)  476.76                80
 09/14/2023   06:21:38   (   0.04, -75.25) (  -0.04, -74.90)   40.68                80
 09/16/2023   18:24:51   (  -0.03, -75.30) (  -0.10, -75.68)   42.92                80
 09/17/2023   18:08:46   (  -0.04, -75.32) (   0.92, -71.15)  475.24                80
 09/19/2023   06:30:33   (   0.03, -75.33) (   0.30, -76.42)  123.93                80
 09/20/2023   06:09:09   (   0.03, -75.35) (  -0.72, -71.89)  394.16                80