Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 1 11.  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)
 01/11/2023   06:38:44   (  -0.04, -75.18) (   0.58, -77.98)  318.43                80
 01/12/2023   06:17:20   (  -0.04, -75.18) (  -0.46, -73.45)  197.94                80
 01/13/2023   18:39:15   (   0.04, -75.19) (  -0.77, -78.75)  406.34                80
 01/14/2023   18:23:11   (   0.04, -75.19) (   0.28, -74.23)  110.50                80
 01/16/2023   06:44:58   (  -0.04, -75.20) (   0.90, -79.50)  489.77                80
 01/17/2023   06:23:33   (  -0.03, -75.20) (  -0.09, -74.96)   27.06                80
 01/19/2023   18:26:43   (   0.02, -75.21) (  -0.07, -75.74)   59.96                80
 01/20/2023   18:10:38   (   0.01, -75.21) (   0.92, -71.21)  457.24                80
 01/22/2023   06:32:24   (  -0.00, -75.22) (   0.30, -76.47)  142.33                80
 01/23/2023   06:11:00   (   0.01, -75.23) (  -0.75, -71.95)  375.11                80
 01/24/2023   18:32:55   (   0.02, -75.25) (  -0.44, -77.25)  228.39                80