Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 19.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 05/20/2025   22:36:50   (  70.11,-162.91) 05/20/2025   22:37:14  (  70.09,-162.99)    3.70                24
 05/20/2025   23:27:32   ( -70.04,   4.53) 05/20/2025   23:26:43  ( -70.03,   4.56)    1.35                49
 05/23/2025   14:03:04   ( -70.26, 145.32) 05/23/2025   14:04:16  ( -70.25, 145.48)    5.84                72
 05/23/2025   14:53:47   (  70.07, -47.09) 05/23/2025   14:53:44  (  70.09, -47.11)    2.47                 3
 05/23/2025   15:44:28   ( -69.94, 120.43) 05/23/2025   15:43:14  ( -69.98, 120.37)    5.03                74
 05/26/2025   06:20:00   ( -70.17, -98.78) 05/26/2025   06:20:47  ( -70.18, -98.74)    1.99                47
 05/26/2025   07:10:43   (  70.04,  68.72) 05/26/2025   07:10:14  (  70.02,  68.67)    2.91                29
 05/28/2025   21:46:28   (  70.95,-151.61) 05/28/2025   21:47:35  (  70.85,-149.49)   77.72                67
 05/28/2025   22:36:56   ( -70.14,  17.02) 05/28/2025   22:37:16  ( -70.15,  17.09)    2.71                20
 05/28/2025   23:27:40   (  70.01,-175.47) 05/28/2025   23:26:43  (  70.03,-175.42)    3.33                57
 05/31/2025   14:03:11   (  70.20, -34.63) 05/31/2025   14:04:16  (  70.19, -34.59)    1.50                65
 05/31/2025   14:53:52   ( -70.07, 132.89) 05/31/2025   14:53:46  ( -70.09, 132.89)    2.22                 6
 05/31/2025   15:44:30   (  69.62, -59.13) 05/31/2025   15:43:19  (  69.64, -60.08)   36.94                71