Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 12 8.  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)
 12/08/2023   06:28:38   (  -0.01, -75.20) (   0.33, -76.61)  160.69                80
 12/09/2023   06:09:54   (   0.00, -75.20) (  -0.68, -72.08)  355.93                80
 12/10/2023   18:31:51   (   0.00, -75.22) (  -0.48, -77.39)  247.30                80
 12/11/2023   18:15:47   (  -0.00, -75.22) (   0.53, -72.86)  269.51                80
 12/13/2023   06:37:35   (   0.00, -75.22) (   0.65, -78.13)  331.54                80
 12/14/2023   06:16:11   (   0.01, -75.22) (  -0.36, -73.59)  185.11                80
 12/15/2023   18:38:07   (  -0.01, -75.23) (  -0.84, -78.90)  418.12                80
 12/16/2023   18:22:02   (  -0.01, -75.24) (   0.17, -74.36)   98.97                80
 12/19/2023   06:22:26   (   0.01, -75.25) (  -0.01, -75.10)   16.63                80
 12/21/2023   18:25:38   (  -0.01, -75.29) (  -0.16, -75.88)   67.48                80