Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 8 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)
 08/07/2023   06:36:47   (   0.03, -75.22) (   0.62, -77.87)  302.62                80
 08/08/2023   06:15:21   (   0.03, -75.22) (  -0.42, -73.34)  215.15                80
 08/09/2023   18:37:15   (  -0.02, -75.24) (  -0.77, -78.64)  386.60                80
 08/10/2023   18:21:10   (   0.02, -75.26) (   0.28, -74.11)  130.61                80
 08/12/2023   06:42:55   (  -0.01, -75.27) (   0.93, -79.37)  467.58                80
 08/13/2023   06:21:30   (  -0.01, -75.28) (  -0.11, -74.84)   50.88                80
 08/15/2023   18:24:38   (   0.00, -75.33) (  -0.06, -75.60)   30.66                80
 08/16/2023   18:08:32   (  -0.00, -75.35) (   0.99, -71.07)  488.55                80
 08/18/2023   06:30:17   (   0.00, -75.38) (   0.21, -76.33)  107.93                80
 08/19/2023   06:08:51   (   0.00, -75.40) (  -0.78, -71.79)  411.62                80