Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 5 12.  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)
 05/14/2023   06:31:10   (  -0.02, -75.19) (   0.24, -76.42)  138.93                80
 05/15/2023   06:09:46   (  -0.02, -75.20) (  -0.76, -71.89)  377.97                80
 05/16/2023   18:31:43   (   0.02, -75.22) (  -0.41, -77.20)  225.10                80
 05/17/2023   18:15:38   (   0.02, -75.23) (   0.60, -72.67)  292.26                80
 05/19/2023   06:37:27   (  -0.02, -75.25) (   0.57, -77.94)  306.89                80
 05/20/2023   06:16:02   (  -0.02, -75.26) (  -0.44, -73.42)  210.61                80
 05/21/2023   18:37:58   (   0.02, -75.28) (  -0.77, -78.72)  391.77                80
 05/22/2023   18:21:54   (   0.01, -75.30) (   0.24, -74.19)  126.20                80
 05/24/2023   06:43:42   (  -0.01, -75.33) (   0.91, -79.47)  471.77                80
 05/25/2023   06:22:18   (  -0.01, -75.35) (  -0.10, -74.94)   46.52                80