Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 6.  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)
 06/07/2023   18:21:56   (   0.02, -75.18) (   0.26, -74.22)  110.24                80
 06/09/2023   06:41:03   (  -0.03, -75.18) (   0.93, -79.49)  490.26                80
 06/10/2023   06:24:58   (  -0.02, -75.19) (  -0.10, -74.96)   26.59                80
 06/12/2023   18:25:29   (   0.03, -75.20) (  -0.11, -75.73)   60.69                80
 06/13/2023   18:09:25   (   0.02, -75.21) (   0.92, -71.20)  456.67                80
 06/15/2023   06:28:32   (  -0.03, -75.22) (   0.25, -76.47)  142.27                80
 06/16/2023   06:12:28   (  -0.03, -75.23) (  -0.78, -71.94)  375.23                80
 06/17/2023   18:31:44   (   0.04, -75.25) (  -0.39, -77.25)  228.06                80
 06/18/2023   18:15:38   (   0.04, -75.26) (   0.59, -72.71)  289.85                80
 06/20/2023   06:34:46   (  -0.05, -75.29) (   0.58, -77.99)  308.07                80