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) (   0.62, -77.91)  309.07                80
 10/11/2023   06:15:17   (   0.03, -75.20) (  -0.38, -73.38)  207.48                80
 10/12/2023   18:37:12   (  -0.02, -75.21) (  -0.81, -78.68)  395.51                80
 10/13/2023   18:21:07   (  -0.02, -75.21) (   0.20, -74.14)  121.64                80
 10/15/2023   06:42:53   (   0.02, -75.21) (   0.98, -79.41)  478.67                80
 10/16/2023   06:21:27   (   0.02, -75.21) (  -0.04, -74.87)   38.58                80
 10/18/2023   18:24:37   (  -0.02, -75.23) (  -0.11, -75.64)   46.55                80
 10/19/2023   18:08:32   (  -0.02, -75.24) (   0.91, -71.11)  470.78                80
 10/21/2023   06:30:18   (   0.02, -75.24) (   0.24, -76.38)  129.33                80
 10/22/2023   06:08:52   (   0.01, -75.24) (  -0.73, -71.83)  388.09                80
 10/23/2023   18:30:47   (  -0.01, -75.26) (  -0.42, -77.14)  213.77                80