Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 9 1.  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)
 09/03/2023   06:30:29   (   0.06, -75.21) (   0.31, -76.38)  132.79                80
 09/04/2023   06:09:04   (   0.06, -75.21) (  -0.69, -71.84)  383.99                80
 09/05/2023   18:31:02   (  -0.06, -75.23) (  -0.48, -77.16)  219.24                80
 09/06/2023   18:14:57   (  -0.06, -75.24) (   0.52, -72.63)  297.79                80
 09/08/2023   06:36:46   (   0.05, -75.25) (   0.66, -77.90)  302.30                80
 09/09/2023   06:15:21   (   0.05, -75.26) (  -0.35, -73.37)  214.95                80
 09/10/2023   18:37:18   (  -0.04, -75.28) (  -0.81, -78.68)  387.56                80
 09/11/2023   18:21:14   (  -0.04, -75.30) (   0.20, -74.15)  130.26                80
 09/13/2023   06:43:02   (   0.03, -75.32) (   0.97, -79.43)  468.34                80
 09/14/2023   06:21:39   (   0.03, -75.34) (  -0.10, -74.91)   50.03                80