Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 9 9.  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)
 09/09/2023   06:15:21   (   0.06, -75.21) (  -0.33, -73.36)  209.68                80
 09/10/2023   18:37:18   (  -0.05, -75.23) (  -0.83, -78.68)  393.22                80
 09/11/2023   18:21:14   (  -0.05, -75.24) (   0.18, -74.15)  123.67                80
 09/13/2023   06:43:02   (   0.04, -75.24) (   0.98, -79.42)  477.27                80
 09/14/2023   06:21:38   (   0.04, -75.25) (  -0.03, -74.89)   40.12                80
 09/16/2023   18:24:50   (  -0.03, -75.29) (  -0.11, -75.68)   43.45                80
 09/17/2023   18:08:46   (  -0.04, -75.31) (   0.90, -71.15)  474.58                80
 09/19/2023   06:30:33   (   0.03, -75.32) (   0.31, -76.41)  124.93                80
 09/20/2023   06:09:09   (   0.04, -75.34) (  -0.71, -71.88)  393.09                80
 09/21/2023   18:31:06   (  -0.03, -75.37) (  -0.43, -77.20)  207.95                80
 09/22/2023   18:15:02   (  -0.03, -75.39) (   0.60, -72.67)  310.07                80