Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2022 12 22.  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)
 12/23/2022   18:33:03   (   0.02, -75.19) (  -0.40, -77.19)  226.78                80
 12/24/2022   18:16:57   (   0.01, -75.20) (   0.56, -72.65)  289.65                80
 12/26/2022   06:36:06   (  -0.02, -75.19) (   0.59, -77.93)  311.77                80
 12/27/2022   06:20:01   (  -0.01, -75.20) (  -0.42, -73.40)  204.99                80
 12/28/2022   18:39:17   (   0.02, -75.22) (  -0.77, -78.71)  398.16                80
 12/29/2022   18:23:13   (   0.02, -75.23) (   0.26, -74.19)  119.30                80
 12/31/2022   06:45:00   (  -0.02, -75.25) (   0.95, -79.45)  480.14                80
 01/01/2023   06:23:36   (  -0.02, -75.26) (  -0.08, -74.93)   37.75                80
 01/03/2023   18:26:48   (   0.00, -75.31) (  -0.08, -75.71)   45.83                80
 01/04/2023   18:10:42   (  -0.00, -75.33) (   0.89, -71.17)  472.50                80