Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 7 21.  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)
 07/22/2023   06:37:04   (   0.02, -75.20) (   0.63, -77.93)  310.27                80
 07/23/2023   06:15:39   (   0.02, -75.21) (  -0.39, -73.39)  207.01                80
 07/24/2023   18:37:33   (  -0.02, -75.22) (  -0.83, -78.69)  395.50                80
 07/25/2023   18:21:28   (  -0.03, -75.23) (   0.19, -74.15)  122.12                80
 07/27/2023   06:43:14   (   0.03, -75.24) (   0.98, -79.42)  476.98                80
 07/28/2023   06:21:48   (   0.03, -75.24) (  -0.04, -74.89)   40.62                80
 07/30/2023   18:27:37   (  -0.04, -75.27) (  -0.14, -75.65)   43.94                80
 07/31/2023   18:06:12   (  -0.05, -75.28) (   0.89, -71.12)  473.86                80
 08/02/2023   06:30:38   (   0.05, -75.29) (   0.28, -76.39)  124.66                80
 08/03/2023   06:09:13   (   0.05, -75.30) (  -0.75, -71.85)  393.54                80