Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 13.  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)
 06/15/2023   06:28:32   (  -0.02, -75.19) (   0.27, -76.47)  144.98                80
 06/16/2023   06:12:27   (  -0.02, -75.20) (  -0.77, -71.94)  371.85                80
 06/17/2023   18:31:44   (   0.03, -75.21) (  -0.41, -77.25)  231.82                80
 06/18/2023   18:15:38   (   0.02, -75.22) (   0.57, -72.71)  285.38                80
 06/20/2023   06:34:45   (  -0.03, -75.23) (   0.60, -77.98)  314.05                80
 06/21/2023   06:18:41   (  -0.02, -75.24) (  -0.44, -73.45)  203.57                80
 06/22/2023   18:37:57   (   0.03, -75.26) (  -0.73, -78.76)  398.86                80
 06/23/2023   18:21:52   (   0.02, -75.27) (   0.25, -74.22)  119.32                80
 06/25/2023   06:40:59   (  -0.03, -75.30) (   0.92, -79.50)  478.65                80
 06/26/2023   06:24:55   (  -0.02, -75.31) (  -0.13, -74.97)   39.99                80