Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 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)
 03/20/2025   14:03:16   ( -70.30, 145.27) 03/20/2025   14:04:27  ( -70.28, 145.45)    6.91                71
 03/20/2025   14:53:59   (  70.13, -47.17) 03/20/2025   14:53:55  (  70.12, -47.14)    2.49                 4
 03/20/2025   15:44:38   ( -69.93, 120.45) 03/20/2025   15:43:25  ( -69.94, 120.25)    7.59                73
 03/23/2025   06:20:06   ( -70.16, -98.74) 03/23/2025   06:20:51  ( -70.18, -98.79)    3.10                45
 03/23/2025   07:10:50   (  70.06,  68.72) 03/23/2025   07:10:18  (  70.07,  68.70)    1.73                32
 03/25/2025   21:46:27   (  70.78,-151.28) 03/25/2025   21:47:36  (  70.69,-149.78)   55.96                69
 03/25/2025   22:36:59   ( -70.15,  17.05) 03/25/2025   22:37:14  ( -70.14,  17.05)    1.34                15
 03/25/2025   23:27:42   (  70.00,-175.42) 03/25/2025   23:26:41  (  70.02,-175.47)    3.10                61
 03/28/2025   14:03:09   (  70.22, -34.60) 03/28/2025   14:04:06  (  70.19, -34.60)    2.75                57
 03/28/2025   14:53:51   ( -70.10, 132.90) 03/28/2025   14:53:36  ( -70.08, 132.88)    2.37                15
 03/28/2025   15:44:22   (  69.33, -58.65) 03/28/2025   15:43:14  (  69.36, -60.47)   71.56                68
 03/31/2025   06:20:00   (  70.15,  81.30) 03/31/2025   06:20:27  (  70.13,  81.23)    3.02                27
 03/31/2025   07:10:43   ( -70.08,-111.28) 03/31/2025   07:09:56  ( -70.08,-111.22)    2.50                47