Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 22.  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)
 03/23/2025   06:20:07   ( -70.19, -98.79) 03/23/2025   06:21:00  ( -70.18, -98.83)    1.61                53
 03/23/2025   07:10:51   (  70.09,  68.68) 03/23/2025   07:10:27  (  70.08,  68.67)    1.04                24
 03/23/2025   08:01:18   ( -69.19,-122.70) 03/23/2025   08:00:10  ( -69.25,-124.82)   84.05                68
 03/25/2025   22:36:59   ( -70.18,  17.00) 03/25/2025   22:37:27  ( -70.19,  17.06)    2.75                28
 03/25/2025   23:27:42   (  70.03,-175.47) 03/25/2025   23:26:55  (  70.03,-175.52)    2.34                47
 03/28/2025   14:03:12   (  70.42, -34.91) 03/28/2025   14:04:23  (  70.34, -34.47)   18.57                71
 03/28/2025   14:53:51   ( -70.15, 132.83) 03/28/2025   14:53:55  ( -70.12, 132.85)    2.84                 4
 03/28/2025   15:44:34   (  70.01, -59.64) 03/28/2025   15:43:22  (  70.01, -59.66)    0.93                72
 03/31/2025   06:20:00   (  70.20,  81.21) 03/31/2025   06:20:51  (  70.19,  81.21)    0.93                51
 03/31/2025   07:10:42   ( -70.08,-111.29) 03/31/2025   07:10:21  ( -70.09,-111.31)    1.11                21
 03/31/2025   08:01:09   (  69.09,  57.46) 03/31/2025   08:00:03  (  69.14,  55.05)   95.58                66
 04/02/2025   22:36:51   (  70.16,-162.94) 04/02/2025   22:37:15  (  70.19,-162.91)    3.16                24
 04/02/2025   23:27:33   ( -70.04,   4.56) 04/02/2025   23:26:46  ( -70.03,   4.50)    2.65                47