Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 5 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)
 05/06/2023   18:19:09   (   0.02, -75.20) (   0.28, -74.15)  120.38                80
 05/08/2023   06:43:37   (  -0.02, -75.20) (   0.92, -79.42)  480.25                80
 05/09/2023   06:22:13   (  -0.02, -75.21) (  -0.07, -74.89)   36.17                80
 05/11/2023   18:25:25   (   0.01, -75.22) (  -0.11, -75.66)   51.18                80
 05/12/2023   18:09:22   (   0.01, -75.23) (   0.94, -71.15)  465.97                80
 05/14/2023   06:31:10   (  -0.01, -75.25) (   0.24, -76.42)  133.23                80
 05/15/2023   06:09:46   (  -0.01, -75.26) (  -0.76, -71.89)  384.31                80
 05/16/2023   18:31:43   (   0.01, -75.29) (  -0.41, -77.20)  218.03                80
 05/17/2023   18:15:39   (   0.01, -75.30) (   0.59, -72.67)  300.02                80
 05/19/2023   06:37:27   (  -0.01, -75.33) (   0.58, -77.95)  297.83                80