Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 7 25.  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)
 07/25/2023   18:21:28   (  -0.03, -75.21) (   0.21, -74.15)  119.76                80
 07/27/2023   06:43:14   (   0.02, -75.21) (   0.97, -79.42)  480.23                80
 07/28/2023   06:21:49   (   0.01, -75.21) (  -0.06, -74.89)   36.14                80
 07/30/2023   18:24:58   (   0.01, -75.21) (  -0.07, -75.66)   51.60                80
 07/31/2023   18:08:52   (   0.01, -75.21) (   0.90, -71.12)  465.52                80
 08/02/2023   06:30:38   (  -0.01, -75.22) (   0.26, -76.39)  133.69                80
 08/03/2023   06:09:13   (  -0.00, -75.22) (  -0.77, -71.86)  383.76                80
 08/04/2023   18:31:07   (   0.00, -75.23) (  -0.43, -77.15)  218.83                80
 08/05/2023   18:15:02   (   0.00, -75.25) (   0.61, -72.62)  299.26                80
 08/07/2023   06:36:48   (  -0.00, -75.27) (   0.56, -77.89)  298.34                80
 08/08/2023   06:15:22   (  -0.00, -75.28) (  -0.42, -73.35)  220.07                80