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   18:37:18   (  -0.05, -75.23) (  -0.84, -78.67)  393.17                80
 09/11/2023   18:21:14   (  -0.05, -75.23) (   0.17, -74.14)  123.70                80
 09/13/2023   06:43:02   (   0.04, -75.23) (   0.99, -79.42)  477.38                80
 09/14/2023   06:21:37   (   0.04, -75.25) (  -0.02, -74.89)   40.01                80
 09/16/2023   18:24:50   (  -0.04, -75.29) (  -0.12, -75.68)   43.62                80
 09/17/2023   18:08:46   (  -0.04, -75.31) (   0.89, -71.15)  474.36                80
 09/19/2023   06:30:34   (   0.04, -75.32) (   0.26, -76.42)  125.28                80
 09/20/2023   06:09:10   (   0.04, -75.33) (  -0.76, -71.90)  392.70                80
 09/21/2023   18:31:06   (  -0.03, -75.37) (  -0.43, -77.20)  208.34                80
 09/22/2023   18:15:01   (  -0.03, -75.39) (   0.59, -72.67)  309.64                80