Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 10 8.  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)
 10/08/2023   18:14:56   (  -0.03, -75.22) (   0.55, -72.65)  293.79                80
 10/10/2023   06:36:42   (   0.02, -75.22) (   0.64, -77.91)  306.94                80
 10/11/2023   06:15:16   (   0.02, -75.23) (  -0.36, -73.37)  210.60                80
 10/12/2023   18:37:13   (  -0.02, -75.26) (  -0.77, -78.69)  390.58                80
 10/13/2023   18:21:07   (  -0.02, -75.27) (   0.24, -74.15)  127.57                80
 10/15/2023   06:42:54   (   0.02, -75.28) (   0.94, -79.42)  471.49                80
 10/16/2023   06:21:28   (   0.02, -75.29) (  -0.08, -74.88)   46.74                80
 10/18/2023   18:24:38   (  -0.02, -75.34) (  -0.07, -75.65)   35.67                80
 10/19/2023   18:08:31   (  -0.02, -75.35) (   0.90, -71.11)  482.76                80
 10/21/2023   06:30:18   (   0.01, -75.36) (   0.26, -76.38)  116.09                80