Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 9 17.  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)
 09/17/2023   18:08:46   (  -0.06, -75.22) (   0.88, -71.14)  465.83                80
 09/19/2023   06:30:33   (   0.06, -75.22) (   0.32, -76.41)  134.81                80
 09/20/2023   06:09:08   (   0.06, -75.23) (  -0.70, -71.88)  382.06                80
 09/21/2023   18:31:05   (  -0.05, -75.24) (  -0.50, -77.18)  221.25                80
 09/22/2023   18:15:00   (  -0.05, -75.25) (   0.52, -72.65)  295.67                80
 09/24/2023   06:36:49   (   0.04, -75.25) (   0.62, -77.93)  304.81                80
 09/25/2023   06:15:23   (   0.04, -75.26) (  -0.35, -73.39)  212.29                80
 09/26/2023   18:37:20   (  -0.03, -75.28) (  -0.78, -78.71)  390.41                80
 09/27/2023   18:21:16   (  -0.03, -75.29) (   0.25, -74.18)  127.41                80
 09/29/2023   06:43:03   (   0.02, -75.31) (   0.93, -79.45)  471.23                80
 09/30/2023   06:21:38   (   0.03, -75.33) (  -0.04, -74.91)   47.11                80