Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 5 18.  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)
 05/20/2025   07:55:00   (  -0.01, -95.68) (   0.32, -97.10)  162.46                80
 05/21/2025   07:33:39   (  -0.02, -96.20) (  -0.82, -92.61)  409.57                80
 05/22/2025   19:58:19   (   0.01, -97.02) (  -0.20, -97.95)  106.24                80
 05/23/2025   19:36:58   (   0.01, -97.54) (   0.95, -93.46)  466.07                80
 05/25/2025   08:01:30   (  -0.01, -98.32) (   0.07, -98.77)   50.70                80
 05/27/2025   20:02:08   (   0.01, -99.65) (   0.01, -99.61)    4.86                80
 05/30/2025   08:05:19   (  -0.01,-100.95) (  -0.16,-100.42)   60.46                80
 05/31/2025   20:29:58   (   0.01,-101.76) (  -0.91,-105.76)  456.00                80