Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 7 19.  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)
 07/19/2023   18:32:51   (   0.01, -75.20) (   0.00, -77.30)  233.41                 0
 07/20/2023   18:15:19   (   0.01, -75.20) (   0.60, -72.67)  288.87                80
 07/22/2023   06:37:05   (  -0.01, -75.20) (   0.58, -77.94)  311.09                80
 07/23/2023   06:15:40   (  -0.01, -75.21) (  -0.44, -73.40)  206.23                80
 07/24/2023   18:37:34   (   0.01, -75.22) (  -0.78, -78.70)  396.38                80
 07/25/2023   18:21:28   (   0.01, -75.23) (   0.24, -74.16)  121.20                80
 07/27/2023   06:43:15   (  -0.00, -75.24) (   0.94, -79.43)  477.87                80
 07/28/2023   06:21:49   (   0.00, -75.24) (  -0.09, -74.90)   39.75                80
 07/30/2023   18:24:58   (  -0.01, -75.27) (  -0.09, -75.66)   44.90                80
 07/31/2023   18:08:53   (  -0.01, -75.27) (   0.94, -71.13)  472.89                80
 08/02/2023   06:30:39   (   0.01, -75.29) (   0.24, -76.40)  125.73                80