Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 4 21.  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)
 04/22/2023   06:43:39   (  -0.04, -75.20) (   0.90, -79.40)  478.31                80
 04/23/2023   06:22:12   (  -0.04, -75.20) (  -0.12, -74.86)   38.79                80
 04/25/2023   18:27:58   (   0.03, -75.20) (  -0.09, -75.61)   47.40                80
 04/26/2023   18:06:32   (   0.03, -75.21) (   0.94, -71.08)  470.36                80
 04/28/2023   06:30:56   (  -0.02, -75.22) (   0.24, -76.33)  127.13                80
 04/29/2023   06:09:30   (  -0.02, -75.23) (  -0.79, -71.80)  391.01                80
 04/30/2023   18:34:03   (   0.02, -75.24) (  -0.37, -77.10)  210.99                80
 05/01/2023   18:12:36   (   0.02, -75.25) (   0.61, -72.55)  307.65                80
 05/03/2023   06:37:00   (  -0.01, -75.28) (   0.57, -77.81)  288.53                80
 05/04/2023   06:15:33   (  -0.02, -75.29) (  -0.47, -73.28)  230.32                80
 05/05/2023   18:40:06   (   0.01, -75.31) (  -0.73, -78.56)  370.91                80