Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 5 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)
 05/14/2023   06:31:10   (  -0.02, -75.19) (   0.26, -76.41)  139.12                80
 05/15/2023   06:09:45   (  -0.02, -75.20) (  -0.74, -71.88)  377.79                80
 05/16/2023   18:34:22   (   0.02, -75.22) (  -0.43, -77.19)  225.27                80
 05/17/2023   18:12:58   (   0.02, -75.23) (   0.57, -72.66)  292.08                80
 05/19/2023   06:37:26   (  -0.02, -75.25) (   0.59, -77.94)  307.12                80
 05/20/2023   06:16:02   (  -0.03, -75.26) (  -0.41, -73.41)  210.37                80
 05/21/2023   18:40:39   (   0.02, -75.28) (  -0.74, -78.72)  392.01                80
 05/22/2023   18:21:55   (   0.02, -75.30) (   0.27, -74.19)  125.90                80
 05/24/2023   06:43:43   (  -0.02, -75.33) (   0.89, -79.47)  472.11                80
 05/25/2023   06:22:19   (  -0.02, -75.34) (  -0.13, -74.94)   46.22                80
 05/27/2023   18:25:30   (   0.01, -75.40) (  -0.06, -75.72)   36.09                80