Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 8 25.  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)
 08/26/2023   18:21:06   (  -0.06, -75.21) (   0.16, -74.10)  126.44                80
 08/28/2023   06:42:56   (   0.05, -75.22) (   0.98, -79.38)  474.42                80
 08/29/2023   06:21:31   (   0.05, -75.22) (  -0.01, -74.85)   41.99                80
 08/31/2023   18:24:45   (  -0.04, -75.24) (  -0.11, -75.64)   45.35                80
 09/01/2023   18:08:41   (  -0.04, -75.25) (   0.88, -71.11)  472.03                80
 09/03/2023   06:30:29   (   0.04, -75.27) (   0.31, -76.38)  126.78                80
 09/04/2023   06:09:06   (   0.04, -75.28) (  -0.75, -71.86)  390.88                80
 09/05/2023   18:31:02   (  -0.04, -75.31) (  -0.47, -77.16)  211.89                80
 09/06/2023   18:14:58   (  -0.04, -75.32) (   0.59, -72.64)  306.01                80
 09/08/2023   06:36:47   (   0.03, -75.35) (   0.59, -77.92)  292.05                80