Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 1 14.  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)
 01/16/2023   06:44:57   (  -0.05, -75.20) (   0.92, -79.49)  489.90                80
 01/17/2023   06:23:32   (  -0.04, -75.20) (  -0.07, -74.96)   27.22                80
 01/19/2023   18:26:43   (   0.03, -75.22) (  -0.09, -75.74)   59.09                80
 01/20/2023   18:10:37   (   0.02, -75.22) (   0.91, -71.20)  458.08                80
 01/22/2023   06:32:25   (  -0.03, -75.23) (   0.25, -76.48)  142.03                80
 01/23/2023   06:10:59   (  -0.03, -75.24) (  -0.75, -71.94)  375.34                80
 01/24/2023   18:32:55   (   0.03, -75.26) (  -0.43, -77.25)  226.82                80
 01/25/2023   18:16:50   (   0.03, -75.28) (   0.63, -72.73)  291.38                80
 01/27/2023   06:38:36   (  -0.03, -75.30) (   0.57, -77.99)  306.69                80
 01/28/2023   06:17:11   (  -0.03, -75.32) (  -0.43, -73.46)  211.85                80