Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 12 24.  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)
 12/24/2023   06:31:22   (  -0.02, -75.21) (   0.27, -76.62)  160.13                80
 12/25/2023   06:09:57   (  -0.01, -75.21) (  -0.70, -72.08)  356.71                80
 12/26/2023   18:31:53   (   0.01, -75.22) (  -0.47, -77.38)  246.48                80
 12/27/2023   18:15:48   (   0.01, -75.23) (   0.56, -72.86)  270.87                80
 12/29/2023   06:37:36   (  -0.01, -75.24) (   0.63, -78.12)  328.53                80
 12/30/2023   06:16:11   (  -0.00, -75.24) (  -0.40, -73.59)  189.08                80
 12/31/2023   18:38:07   (   0.01, -75.26) (  -0.81, -78.89)  413.04                80
 01/01/2024   18:22:02   (   0.01, -75.28) (   0.23, -74.36)  105.26                80
 01/03/2024   06:43:49   (  -0.01, -75.31) (   0.96, -79.62)  492.23                80
 01/04/2024   06:22:24   (  -0.01, -75.32) (  -0.03, -75.08)   26.47                80
 01/06/2024   18:25:35   (  -0.00, -75.37) (  -0.12, -75.86)   55.90                80