Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 4 28.  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)
 04/28/2023   06:31:01   (  -0.03, -75.18) (   0.21, -76.36)  133.49                80
 04/29/2023   06:09:37   (  -0.03, -75.18) (  -0.76, -71.82)  382.53                80
 04/30/2023   18:34:14   (   0.02, -75.18) (  -0.43, -77.13)  222.60                80
 05/01/2023   18:12:51   (   0.02, -75.19) (   0.61, -72.61)  293.91                80
 05/03/2023   06:37:19   (  -0.02, -75.20) (   0.59, -77.88)  305.55                80
 05/04/2023   06:15:55   (  -0.02, -75.21) (  -0.46, -73.36)  211.19                80
 05/05/2023   18:40:32   (   0.02, -75.22) (  -0.78, -78.66)  393.22                80
 05/06/2023   18:19:08   (   0.02, -75.23) (   0.28, -74.14)  123.63                80
 05/08/2023   06:43:36   (  -0.02, -75.24) (   0.91, -79.42)  475.50                80
 05/09/2023   06:22:12   (  -0.02, -75.25) (  -0.09, -74.89)   41.38                80
 05/11/2023   18:28:05   (   0.01, -75.27) (  -0.07, -75.67)   45.54                80