Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 1 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)
 01/11/2023   06:38:44   (  -0.04, -75.22) (   0.60, -77.97)  314.62                80
 01/12/2023   06:17:20   (  -0.04, -75.23) (  -0.44, -73.45)  202.72                80
 01/13/2023   18:39:16   (   0.04, -75.25) (  -0.73, -78.76)  400.02                80
 01/14/2023   18:23:10   (   0.04, -75.26) (   0.25, -74.22)  117.84                80
 01/16/2023   06:44:58   (  -0.03, -75.28) (   0.92, -79.49)  480.74                80
 01/17/2023   06:23:33   (  -0.03, -75.29) (  -0.12, -74.97)   37.17                80
 01/19/2023   18:26:43   (   0.00, -75.32) (  -0.10, -75.74)   47.25                80
 01/20/2023   18:10:38   (  -0.01, -75.34) (   0.89, -71.20)  471.05                80
 01/22/2023   06:32:25   (   0.02, -75.36) (   0.28, -76.47)  126.88                80
 01/23/2023   06:11:00   (   0.02, -75.38) (  -0.77, -71.95)  391.33                80