Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 15.  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)
 06/16/2023   06:12:27   (  -0.02, -75.20) (  -0.72, -71.93)  371.82                80
 06/17/2023   18:31:43   (   0.02, -75.21) (  -0.45, -77.24)  231.88                80
 06/18/2023   18:15:38   (   0.02, -75.21) (   0.59, -72.71)  285.21                80
 06/20/2023   06:34:46   (  -0.02, -75.22) (   0.58, -77.98)  314.35                80
 06/21/2023   06:18:40   (  -0.02, -75.23) (  -0.40, -73.44)  203.21                80
 06/22/2023   18:37:57   (   0.02, -75.25) (  -0.77, -78.75)  399.18                80
 06/23/2023   18:21:51   (   0.01, -75.27) (   0.22, -74.22)  118.94                80
 06/25/2023   06:40:58   (  -0.02, -75.29) (   0.95, -79.49)  479.24                80
 06/26/2023   06:24:54   (  -0.01, -75.30) (  -0.10, -74.96)   39.23                80
 06/28/2023   18:25:25   (   0.02, -75.35) (  -0.06, -75.74)   43.42                80