Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 6 24.  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)
 06/25/2023   06:43:39   (  -0.02, -75.20) (   0.91, -79.49)  488.54                80
 06/26/2023   06:22:13   (  -0.02, -75.20) (  -0.08, -74.95)   28.49                80
 06/28/2023   18:25:24   (   0.02, -75.22) (  -0.09, -75.73)   57.71                80
 06/29/2023   18:09:19   (   0.02, -75.23) (   0.91, -71.19)  459.56                80
 07/01/2023   06:31:06   (  -0.03, -75.24) (   0.24, -76.47)  139.79                80
 07/02/2023   06:12:20   (  -0.03, -75.25) (  -0.75, -71.93)  377.44                80
 07/03/2023   18:31:37   (   0.04, -75.26) (  -0.38, -77.24)  225.89                80
 07/04/2023   18:15:31   (   0.04, -75.27) (   0.62, -72.71)  291.64                80
 07/06/2023   06:34:38   (  -0.04, -75.28) (   0.59, -77.97)  307.01                80
 07/07/2023   06:18:33   (  -0.04, -75.30) (  -0.47, -73.45)  211.09                80