Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 5 9.  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)
 05/11/2023   18:25:25   (   0.02, -75.19) (  -0.11, -75.66)   54.99                80
 05/12/2023   18:09:22   (   0.01, -75.19) (   0.94, -71.14)  461.40                80
 05/14/2023   06:31:10   (  -0.01, -75.19) (   0.24, -76.42)  138.98                80
 05/15/2023   06:09:46   (  -0.01, -75.20) (  -0.76, -71.89)  377.84                80
 05/16/2023   18:31:42   (   0.01, -75.22) (  -0.46, -77.19)  225.60                80
 05/17/2023   18:15:39   (   0.01, -75.23) (   0.60, -72.67)  291.72                80
 05/19/2023   06:37:26   (  -0.01, -75.24) (   0.62, -77.93)  307.32                80
 05/20/2023   06:16:02   (  -0.01, -75.26) (  -0.44, -73.42)  210.15                80
 05/21/2023   18:37:59   (   0.01, -75.28) (  -0.77, -78.72)  392.60                80
 05/22/2023   18:21:54   (   0.00, -75.29) (   0.25, -74.19)  125.29                80