Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 7 9.  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)
 07/09/2023   18:21:42   (   0.01, -75.21) (   0.24, -74.20)  115.07                80
 07/11/2023   06:43:29   (  -0.01, -75.21) (   0.95, -79.46)  484.72                80
 07/12/2023   06:22:03   (  -0.01, -75.22) (  -0.05, -74.93)   32.78                80
 07/14/2023   18:25:13   (   0.00, -75.25) (  -0.12, -75.70)   51.64                80
 07/15/2023   18:09:07   (  -0.00, -75.26) (   0.89, -71.16)  466.28                80
 07/17/2023   06:30:55   (   0.00, -75.27) (   0.25, -76.44)  132.55                80
 07/18/2023   06:09:29   (   0.00, -75.29) (  -0.77, -71.91)  385.65                80
 07/19/2023   18:31:25   (  -0.00, -75.32) (  -0.40, -77.21)  215.12                80
 07/20/2023   18:15:19   (  -0.00, -75.34) (   0.61, -72.68)  303.63                80
 07/22/2023   06:37:05   (   0.00, -75.36) (   0.58, -77.94)  293.73                80
 07/23/2023   06:15:40   (   0.00, -75.39) (  -0.44, -73.41)  225.39                80