Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 10 24.  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)
 10/24/2023   18:14:58   (  -0.04, -75.20) (   0.52, -72.66)  289.57                80
 10/26/2023   06:34:08   (   0.03, -75.20) (   0.65, -77.94)  312.82                80
 10/27/2023   06:18:06   (   0.03, -75.20) (  -0.38, -73.42)  203.05                80
 10/28/2023   18:37:25   (  -0.03, -75.21) (  -0.79, -78.74)  401.85                80
 10/29/2023   18:21:22   (  -0.03, -75.22) (   0.19, -74.21)  114.39                80
 10/31/2023   06:40:32   (   0.03, -75.22) (   0.98, -79.49)  486.84                80
 11/01/2023   06:21:49   (   0.03, -75.23) (  -0.00, -74.96)   29.60                80
 11/03/2023   18:25:06   (  -0.02, -75.25) (  -0.11, -75.77)   58.15                80
 11/04/2023   18:09:02   (  -0.02, -75.26) (   0.88, -71.24)  458.89                80
 11/06/2023   06:30:52   (   0.01, -75.28) (   0.28, -76.52)  140.83                80
 11/07/2023   06:09:29   (   0.02, -75.30) (  -0.71, -71.99)  376.57                80