Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 12 30.  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)
 12/31/2023   18:38:07   (   0.04, -75.22) (  -0.82, -78.88)  418.38                80
 01/01/2024   18:22:02   (   0.03, -75.23) (   0.22, -74.36)   99.20                80
 01/03/2024   06:43:49   (  -0.04, -75.24) (   0.96, -79.62)  499.99                80
 01/04/2024   06:22:25   (  -0.03, -75.25) (  -0.08, -75.09)   17.83                80
 01/06/2024   18:25:36   (   0.03, -75.28) (  -0.08, -75.86)   65.90                80
 01/07/2024   18:09:30   (   0.02, -75.29) (   0.91, -71.32)  452.37                80
 01/09/2024   06:31:18   (  -0.02, -75.31) (   0.27, -76.59)  145.91                80
 01/10/2024   06:09:52   (  -0.01, -75.32) (  -0.73, -72.05)  372.18                80
 01/11/2024   18:31:47   (   0.00, -75.34) (  -0.47, -77.35)  229.39                80
 01/12/2024   18:15:43   (  -0.00, -75.36) (   0.59, -72.82)  289.16                80