Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 10 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)
 10/10/2023   06:36:42   (   0.03, -75.20) (   0.65, -77.91)  309.08                80
 10/11/2023   06:15:16   (   0.03, -75.20) (  -0.36, -73.37)  207.50                80
 10/12/2023   18:37:13   (  -0.02, -75.21) (  -0.78, -78.69)  395.44                80
 10/13/2023   18:21:07   (  -0.02, -75.21) (   0.23, -74.15)  121.74                80
 10/15/2023   06:42:53   (   0.02, -75.21) (   0.94, -79.42)  478.59                80
 10/16/2023   06:21:28   (   0.02, -75.22) (  -0.07, -74.88)   38.75                80
 10/18/2023   18:24:37   (  -0.02, -75.24) (  -0.14, -75.64)   46.42                80
 10/19/2023   18:08:31   (  -0.02, -75.24) (   0.89, -71.11)  471.00                80
 10/21/2023   06:30:18   (   0.02, -75.24) (   0.27, -76.37)  129.09                80
 10/22/2023   06:08:52   (   0.01, -75.25) (  -0.76, -71.84)  388.31                80