Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 18.  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)
 03/20/2025   14:03:15   ( -70.27, 145.31) 03/20/2025   14:04:27  ( -70.25, 145.41)    4.28                72
 03/20/2025   14:53:58   (  70.11, -47.14) 03/20/2025   14:53:55  (  70.09, -47.18)    2.93                 3
 03/20/2025   15:44:38   ( -69.91, 120.49) 03/20/2025   15:43:25  ( -69.97, 120.29)   10.37                73
 03/23/2025   06:20:07   ( -70.19, -98.79) 03/23/2025   06:20:52  ( -70.16, -98.82)    3.29                45
 03/23/2025   07:10:51   (  70.09,  68.68) 03/23/2025   07:10:18  (  70.10,  68.74)    3.04                33
 03/25/2025   21:46:28   (  70.81,-151.32) 03/25/2025   21:47:37  (  70.67,-149.81)   57.74                69
 03/25/2025   22:36:59   ( -70.12,  17.09) 03/25/2025   22:37:15  ( -70.12,  17.02)    2.80                16
 03/25/2025   23:27:43   (  70.03,-175.46) 03/25/2025   23:26:41  (  70.06,-175.42)    3.34                62
 03/28/2025   14:03:08   (  70.19, -34.56) 03/28/2025   14:04:06  (  70.18, -34.62)    3.05                58
 03/28/2025   14:53:51   ( -70.13, 132.86) 03/28/2025   14:53:35  ( -70.12, 132.93)    3.00                16
 03/28/2025   15:44:22   (  69.35, -58.69) 03/28/2025   15:43:13  (  69.40, -60.42)   67.97                69
 03/31/2025   06:20:00   (  70.17,  81.25) 03/31/2025   06:20:26  (  70.17,  81.29)    1.30                26
 03/31/2025   07:10:42   ( -70.05,-111.24) 03/31/2025   07:09:56  ( -70.07,-111.23)    1.73                46