Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 4.  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)
 06/05/2023   06:18:44   (  -0.02, -75.19) (  -0.42, -73.44)  199.85                80
 06/06/2023   18:38:00   (   0.03, -75.18) (  -0.78, -78.74)  406.09                80
 06/07/2023   18:21:56   (   0.02, -75.18) (   0.25, -74.22)  110.01                80
 06/09/2023   06:41:03   (  -0.02, -75.18) (   0.94, -79.49)  490.48                80
 06/10/2023   06:24:58   (  -0.02, -75.18) (  -0.09, -74.96)   26.20                80
 06/12/2023   18:25:29   (   0.02, -75.19) (  -0.13, -75.72)   61.38                80
 06/13/2023   18:09:25   (   0.02, -75.20) (   0.91, -71.20)  455.96                80
 06/15/2023   06:28:32   (  -0.03, -75.22) (   0.27, -76.47)  143.03                80
 06/16/2023   06:12:28   (  -0.03, -75.23) (  -0.76, -71.94)  374.42                80
 06/17/2023   18:31:44   (   0.04, -75.24) (  -0.41, -77.25)  229.16                80
 06/18/2023   18:15:39   (   0.04, -75.25) (   0.62, -72.72)  288.66                80