Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 9 12.  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)
 09/13/2023   06:40:22   (   0.06, -75.21) (   1.01, -79.42)  480.06                80
 09/14/2023   06:21:37   (   0.06, -75.21) (   0.00, -74.89)   36.64                80
 09/16/2023   18:24:50   (  -0.05, -75.24) (  -0.14, -75.67)   49.08                80
 09/17/2023   18:08:45   (  -0.06, -75.25) (   0.88, -71.14)  468.22                80
 09/19/2023   06:27:53   (   0.05, -75.25) (   0.33, -76.41)  132.08                80
 09/20/2023   06:09:08   (   0.05, -75.26) (  -0.69, -71.88)  385.22                80
 09/21/2023   18:31:06   (  -0.05, -75.28) (  -0.45, -77.19)  217.21                80
 09/22/2023   18:15:01   (  -0.05, -75.29) (   0.57, -72.67)  300.12                80
 09/24/2023   06:36:48   (   0.04, -75.30) (   0.63, -77.93)  300.05                80
 09/25/2023   06:15:24   (   0.03, -75.31) (  -0.40, -73.41)  217.41                80
 09/26/2023   18:37:20   (  -0.02, -75.34) (  -0.78, -78.71)  384.37                80