Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 27.  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)
 06/28/2023   18:25:24   (   0.02, -75.19) (  -0.09, -75.73)   60.36                80
 06/29/2023   18:09:19   (   0.02, -75.20) (   0.91, -71.19)  456.27                80
 07/01/2023   06:31:06   (  -0.02, -75.20) (   0.24, -76.47)  143.77                80
 07/02/2023   06:09:40   (  -0.02, -75.20) (  -0.76, -71.93)  372.82                80
 07/03/2023   18:31:36   (   0.02, -75.20) (  -0.44, -77.23)  231.79                80
 07/04/2023   18:15:30   (   0.02, -75.20) (   0.56, -72.69)  285.13                80
 07/06/2023   06:34:38   (  -0.01, -75.21) (   0.58, -77.97)  314.06                80
 07/07/2023   06:18:32   (  -0.01, -75.22) (  -0.42, -73.43)  203.40                80
 07/08/2023   18:37:47   (   0.01, -75.23) (  -0.77, -78.74)  399.74                80
 07/09/2023   18:21:42   (   0.01, -75.24) (   0.24, -74.20)  118.28                80
 07/11/2023   06:40:48   (  -0.01, -75.26) (   0.96, -79.46)  479.42                80