Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 12 4.  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)
 12/05/2023   18:25:35   (   0.00, -75.21) (  -0.14, -75.87)   75.65                80
 12/06/2023   18:09:30   (  -0.00, -75.21) (   0.86, -71.34)  440.82                80
 12/08/2023   06:31:18   (  -0.00, -75.20) (   0.33, -76.61)  160.54                80
 12/09/2023   06:09:54   (   0.00, -75.21) (  -0.68, -72.08)  356.08                80
 12/10/2023   18:31:51   (  -0.00, -75.22) (  -0.47, -77.39)  247.33                80
 12/11/2023   18:15:47   (  -0.01, -75.22) (   0.54, -72.86)  269.52                80
 12/13/2023   06:37:35   (   0.01, -75.22) (   0.63, -78.13)  331.20                80
 12/14/2023   06:16:11   (   0.01, -75.22) (  -0.38, -73.60)  185.49                80
 12/15/2023   18:38:07   (  -0.01, -75.23) (  -0.81, -78.90)  417.94                80
 12/16/2023   18:22:02   (  -0.01, -75.24) (   0.21, -74.37)   99.21                80