Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 3 4.  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)
 03/05/2023   06:44:39   (  -0.07, -75.20) (   0.90, -79.55)  495.64                80
 03/06/2023   06:23:13   (  -0.06, -75.20) (  -0.08, -75.01)   21.49                80
 03/08/2023   18:26:24   (   0.06, -75.22) (  -0.09, -75.79)   64.97                80
 03/09/2023   18:10:20   (   0.06, -75.23) (   0.96, -71.26)  452.71                80
 03/11/2023   06:32:07   (  -0.06, -75.26) (   0.21, -76.54)  145.36                80
 03/12/2023   06:10:42   (  -0.06, -75.27) (  -0.78, -72.00)  372.28                80
 03/13/2023   18:32:37   (   0.06, -75.28) (  -0.41, -77.30)  230.81                80
 03/14/2023   18:16:32   (   0.05, -75.29) (   0.64, -72.78)  287.04                80
 03/16/2023   06:38:19   (  -0.04, -75.32) (   0.57, -78.04)  310.58                80
 03/17/2023   06:16:53   (  -0.04, -75.33) (  -0.43, -73.51)  207.37                80