Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 4 27.  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) (   0.23, -76.35)  133.45                80
 04/29/2023   06:09:37   (  -0.03, -75.18) (  -0.80, -71.83)  382.56                80
 04/30/2023   18:34:15   (   0.02, -75.18) (  -0.40, -77.14)  222.63                80
 05/01/2023   18:12:50   (   0.02, -75.19) (   0.58, -72.61)  293.87                80
 05/03/2023   06:37:20   (  -0.02, -75.21) (   0.57, -77.89)  305.57                80
 05/04/2023   06:15:55   (  -0.02, -75.21) (  -0.42, -73.36)  211.15                80
 05/05/2023   18:40:32   (   0.02, -75.22) (  -0.77, -78.67)  393.33                80
 05/06/2023   18:19:09   (   0.02, -75.23) (   0.28, -74.15)  123.49                80
 05/08/2023   06:43:37   (  -0.02, -75.25) (   0.92, -79.42)  475.67                80
 05/09/2023   06:22:13   (  -0.02, -75.25) (  -0.07, -74.89)   41.27                80