Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 8.  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)
 06/09/2023   06:41:02   (  -0.02, -75.18) (   0.96, -79.48)  490.41                80
 06/10/2023   06:24:58   (  -0.02, -75.18) (  -0.06, -74.95)   26.14                80
 06/12/2023   18:25:30   (   0.02, -75.19) (  -0.09, -75.73)   60.98                80
 06/13/2023   18:09:25   (   0.02, -75.20) (   0.94, -71.20)  456.24                80
 06/15/2023   06:28:32   (  -0.03, -75.22) (   0.23, -76.48)  143.03                80
 06/16/2023   06:12:27   (  -0.03, -75.23) (  -0.75, -71.94)  374.38                80
 06/17/2023   18:31:43   (   0.04, -75.24) (  -0.43, -77.24)  228.85                80
 06/18/2023   18:15:39   (   0.04, -75.25) (   0.61, -72.72)  288.94                80
 06/20/2023   06:34:46   (  -0.04, -75.27) (   0.56, -77.99)  309.28                80
 06/21/2023   06:18:41   (  -0.04, -75.29) (  -0.43, -73.45)  208.90                80