Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 17.  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)
 06/17/2023   18:31:43   (   0.02, -75.21) (  -0.46, -77.24)  231.99                80
 06/18/2023   18:15:38   (   0.02, -75.21) (   0.58, -72.71)  285.02                80
 06/20/2023   06:34:46   (  -0.02, -75.22) (   0.59, -77.98)  314.71                80
 06/21/2023   06:18:40   (  -0.02, -75.23) (  -0.40, -73.44)  202.77                80
 06/22/2023   18:37:56   (   0.02, -75.25) (  -0.77, -78.75)  399.73                80
 06/23/2023   18:21:52   (   0.02, -75.26) (   0.28, -74.23)  118.30                80
 06/25/2023   06:40:58   (  -0.02, -75.28) (   0.94, -79.49)  480.03                80
 06/26/2023   06:24:54   (  -0.02, -75.30) (  -0.10, -74.96)   38.36                80
 06/28/2023   18:25:25   (   0.02, -75.35) (  -0.06, -75.74)   44.42                80
 06/29/2023   18:09:19   (   0.02, -75.36) (   0.93, -71.20)  474.15                80