Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 8 18.  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)
 08/19/2023   06:08:56   (   0.04, -75.20) (  -0.73, -71.80)  388.57                80
 08/20/2023   18:30:53   (  -0.04, -75.22) (  -0.46, -77.11)  215.23                80
 08/21/2023   18:14:49   (  -0.04, -75.22) (   0.53, -72.57)  301.43                80
 08/23/2023   06:36:38   (   0.04, -75.23) (   0.62, -77.86)  299.42                80
 08/24/2023   06:15:14   (   0.04, -75.23) (  -0.37, -73.32)  217.20                80
 08/25/2023   18:37:11   (  -0.03, -75.25) (  -0.80, -78.64)  386.54                80
 08/26/2023   18:21:07   (  -0.02, -75.25) (   0.25, -74.12)  130.09                80
 08/28/2023   06:42:56   (   0.00, -75.26) (   0.94, -79.39)  470.87                80
 08/29/2023   06:21:32   (  -0.00, -75.27) (  -0.11, -74.87)   46.09                80
 08/31/2023   18:24:44   (   0.00, -75.30) (  -0.10, -75.64)   38.99                80