Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 7 30.  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)
 07/30/2023   18:26:20   (  -0.03, -75.21) (   0.00, -75.68)   52.03                 0
 07/31/2023   18:08:52   (  -0.02, -75.21) (   0.91, -71.12)  466.88                80
 08/02/2023   06:30:38   (  -0.00, -75.22) (   0.25, -76.39)  132.61                80
 08/03/2023   06:09:13   (   0.00, -75.23) (  -0.78, -71.86)  385.05                80
 08/04/2023   18:31:07   (  -0.01, -75.24) (  -0.42, -77.15)  217.38                80
 08/05/2023   18:15:01   (  -0.01, -75.26) (   0.56, -72.61)  300.97                80
 08/07/2023   06:36:47   (   0.01, -75.28) (   0.60, -77.88)  296.33                80
 08/08/2023   06:15:22   (   0.01, -75.30) (  -0.43, -73.35)  222.09                80
 08/09/2023   18:37:16   (   0.00, -75.32) (  -0.75, -78.65)  379.81                80
 08/10/2023   18:21:10   (   0.01, -75.33) (   0.29, -74.12)  138.85                80
 08/12/2023   06:42:57   (  -0.01, -75.37) (   0.87, -79.39)  457.43                80
 08/13/2023   06:21:30   (  -0.00, -75.39) (  -0.11, -74.84)   61.65                80