Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 2.  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)
 06/02/2023   18:15:41   (   0.02, -75.20) (   0.59, -72.70)  284.65                80
 06/04/2023   06:34:48   (  -0.03, -75.20) (   0.61, -77.97)  315.72                80
 06/05/2023   06:18:44   (  -0.02, -75.20) (  -0.42, -73.44)  200.77                80
 06/06/2023   18:38:00   (   0.03, -75.20) (  -0.78, -78.74)  403.95                80
 06/07/2023   18:21:55   (   0.02, -75.21) (   0.25, -74.22)  112.92                80
 06/09/2023   06:41:03   (  -0.03, -75.22) (   0.94, -79.49)  486.47                80
 06/10/2023   06:24:58   (  -0.02, -75.23) (  -0.09, -74.96)   30.92                80
 06/12/2023   18:25:30   (   0.03, -75.26) (  -0.06, -75.74)   54.51                80
 06/13/2023   18:09:25   (   0.02, -75.27) (   0.91, -71.20)  463.57                80
 06/15/2023   06:28:33   (  -0.04, -75.30) (   0.21, -76.48)  134.32                80
 06/16/2023   06:12:28   (  -0.03, -75.32) (  -0.77, -71.94)  383.90                80