Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 4 3.  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)
 04/03/2023   18:41:08   (   0.05, -75.22) (  -0.75, -78.76)  403.59                80
 04/04/2023   18:19:42   (   0.05, -75.23) (   0.30, -74.23)  114.46                80
 04/06/2023   06:44:08   (  -0.04, -75.25) (   0.89, -79.49)  483.05                80
 04/07/2023   06:22:41   (  -0.05, -75.26) (  -0.11, -74.95)   35.10                80
 04/09/2023   18:28:29   (   0.05, -75.29) (  -0.05, -75.72)   48.52                80
 04/10/2023   18:07:03   (   0.05, -75.30) (   0.95, -71.18)  469.81                80
 04/12/2023   06:31:28   (  -0.04, -75.33) (   0.22, -76.44)  127.30                80
 04/13/2023   06:10:02   (  -0.04, -75.34) (  -0.78, -71.90)  391.15                80
 04/14/2023   18:34:36   (   0.03, -75.36) (  -0.36, -77.21)  210.10                80
 04/15/2023   18:13:09   (   0.03, -75.38) (   0.66, -72.67)  309.00                80