Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 1 27.  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)
 01/27/2023   06:38:36   (  -0.05, -75.18) (   0.56, -77.99)  319.75                80
 01/28/2023   06:17:11   (  -0.05, -75.19) (  -0.45, -73.46)  197.17                80
 01/29/2023   18:39:06   (   0.05, -75.19) (  -0.73, -78.76)  406.38                80
 01/30/2023   18:23:01   (   0.04, -75.20) (   0.29, -74.23)  110.97                80
 02/01/2023   06:44:47   (  -0.04, -75.21) (   0.90, -79.50)  488.29                80
 02/02/2023   06:23:21   (  -0.03, -75.22) (  -0.12, -74.97)   29.36                80
 02/04/2023   18:26:30   (   0.03, -75.24) (  -0.08, -75.73)   55.69                80
 02/05/2023   18:10:25   (   0.02, -75.26) (   0.94, -71.20)  462.58                80
 02/07/2023   06:32:11   (  -0.01, -75.28) (   0.23, -76.47)  134.87                80
 02/08/2023   06:10:45   (  -0.01, -75.30) (  -0.74, -71.92)  383.56                80
 02/09/2023   18:35:20   (   0.01, -75.32) (  -0.41, -77.24)  217.65                80