Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 8 12.  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)
 08/13/2023   06:21:29   (   0.03, -75.21) (  -0.06, -74.82)   43.82                80
 08/15/2023   18:24:38   (  -0.02, -75.23) (  -0.07, -75.60)   40.56                80
 08/16/2023   18:08:31   (  -0.01, -75.24) (   0.91, -71.05)  477.32                80
 08/18/2023   06:30:17   (   0.01, -75.25) (   0.23, -76.32)  121.93                80
 08/19/2023   06:08:51   (   0.01, -75.26) (  -0.77, -71.78)  396.51                80
 08/20/2023   18:30:45   (  -0.01, -75.30) (  -0.40, -77.08)  203.56                80
 08/21/2023   18:14:39   (  -0.01, -75.31) (   0.60, -72.54)  315.20                80
 08/23/2023   06:36:25   (   0.01, -75.33) (   0.54, -77.82)  283.10                80
 08/24/2023   06:14:59   (   0.00, -75.34) (  -0.46, -73.28)  235.52                80
 08/25/2023   18:36:53   (   0.01, -75.38) (  -0.70, -78.58)  364.67                80