Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 3.  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)
 06/04/2023   06:37:28   (  -0.03, -75.20) (   0.61, -77.97)  315.65                80
 06/05/2023   06:18:44   (  -0.02, -75.20) (  -0.41, -73.44)  200.90                80
 06/06/2023   18:38:00   (   0.02, -75.21) (  -0.78, -78.74)  403.62                80
 06/07/2023   18:21:55   (   0.02, -75.21) (   0.24, -74.22)  113.32                80
 06/09/2023   06:41:03   (  -0.02, -75.22) (   0.95, -79.48)  486.03                80
 06/10/2023   06:24:58   (  -0.02, -75.23) (  -0.08, -74.96)   31.40                80
 06/12/2023   18:25:30   (   0.02, -75.26) (  -0.08, -75.74)   53.77                80
 06/13/2023   18:09:26   (   0.02, -75.28) (   0.95, -71.21)  464.33                80
 06/15/2023   06:28:33   (  -0.03, -75.31) (   0.23, -76.48)  133.52                80
 06/16/2023   06:12:28   (  -0.03, -75.32) (  -0.80, -71.95)  384.73                80
 06/17/2023   18:31:45   (   0.04, -75.35) (  -0.37, -77.26)  217.46                80