Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 2 15.  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)
 02/16/2025   14:03:28   ( -71.09, 144.03) 02/16/2025   14:04:34  ( -71.00, 146.52)   90.51                66
 02/16/2025   14:53:57   (  70.16, -47.15) 02/16/2025   14:54:15  (  70.13, -47.13)    3.16                18
 02/16/2025   15:44:38   ( -70.05, 120.33) 02/16/2025   15:43:45  ( -70.02, 120.34)    3.25                53
 02/19/2025   06:20:07   ( -70.20, -98.76) 02/19/2025   06:21:16  ( -70.19, -98.82)    2.89                69
 02/19/2025   07:10:52   (  70.11,  68.69) 02/19/2025   07:10:43  (  70.08,  68.67)    3.43                 9
 02/19/2025   08:01:28   ( -69.73,-123.42) 02/19/2025   08:00:16  ( -69.80,-124.08)   26.64                72
 02/21/2025   22:37:03   ( -70.15,  17.07) 02/21/2025   22:37:44  ( -70.15,  17.01)    2.57                41
 02/21/2025   23:27:48   (  70.06,-175.48) 02/21/2025   23:27:11  (  70.03,-175.51)    3.37                37
 02/24/2025   14:03:25   (  70.61, -35.20) 02/24/2025   14:04:36  (  70.50, -34.22)   38.22                71
 02/24/2025   14:53:59   ( -70.12, 132.89) 02/24/2025   14:54:11  ( -70.12, 132.86)    1.31                12
 02/24/2025   15:44:44   (  70.03, -59.68) 02/24/2025   15:43:38  (  70.01, -59.66)    2.91                66
 02/27/2025   06:20:14   (  70.22,  81.17) 02/27/2025   06:21:07  (  70.22,  81.25)    3.01                53
 02/27/2025   07:10:55   ( -70.09,-111.31) 02/27/2025   07:10:37  ( -70.11,-111.26)    3.04                18
 02/27/2025   08:01:25   (  69.22,  57.28) 02/27/2025   08:00:17  (  69.28,  55.24)   80.63                68