Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 9 10.  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)
 09/10/2023   18:37:19   (  -0.05, -75.22) (  -0.80, -78.68)  394.37                80
 09/11/2023   18:21:14   (  -0.05, -75.21) (   0.20, -74.15)  121.22                80
 09/13/2023   06:42:05   (   0.04, -75.20) (   0.96, -79.43)  481.39                23
 09/14/2023   06:24:18   (   0.04, -75.20) (  -0.05, -74.90)   34.75                80
 09/16/2023   18:24:50   (  -0.04, -75.21) (  -0.15, -75.67)   52.53                80
 09/17/2023   18:08:45   (  -0.04, -75.21) (   0.86, -71.14)  464.19                80
 09/19/2023   06:30:34   (   0.04, -75.21) (   0.29, -76.42)  136.99                80
 09/20/2023   06:09:09   (   0.04, -75.21) (  -0.72, -71.89)  379.69                80
 09/21/2023   18:31:05   (  -0.03, -75.23) (  -0.48, -77.19)  223.68                80
 09/22/2023   18:15:01   (  -0.03, -75.23) (   0.54, -72.66)  293.01                80
 09/24/2023   06:36:49   (   0.02, -75.23) (   0.60, -77.94)  308.05                80