Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 9 11.  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)
 09/11/2023   18:21:14   (  -0.05, -75.21) (   0.19, -74.15)  121.46                80
 09/13/2023   06:40:22   (   0.04, -75.20) (   0.97, -79.42)  480.94                80
 09/14/2023   06:24:18   (   0.04, -75.20) (  -0.04, -74.89)   35.24                80
 09/16/2023   18:24:50   (  -0.04, -75.22) (  -0.16, -75.67)   51.77                80
 09/17/2023   18:08:45   (  -0.04, -75.22) (   0.85, -71.14)  465.09                80
 09/19/2023   06:30:33   (   0.04, -75.22) (   0.30, -76.41)  135.89                80
 09/20/2023   06:09:09   (   0.04, -75.22) (  -0.72, -71.89)  380.89                80
 09/21/2023   18:31:05   (  -0.03, -75.24) (  -0.48, -77.19)  222.33                80
 09/22/2023   18:15:01   (  -0.03, -75.25) (   0.54, -72.66)  294.47                80
 09/24/2023   06:36:49   (   0.02, -75.25) (   0.60, -77.94)  306.39                80
 09/25/2023   06:15:25   (   0.02, -75.25) (  -0.42, -73.41)  210.58                80