Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 4 1.  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)
 04/02/2025   22:36:51   (  70.16,-162.95) 04/02/2025   22:37:26  (  70.17,-162.99)    1.63                35
 04/02/2025   23:27:33   ( -70.05,   4.54) 04/02/2025   23:26:56  ( -70.05,   4.49)    2.17                37
 04/05/2025   14:03:10   ( -70.83, 144.46) 04/05/2025   14:04:19  ( -70.72, 146.06)   60.17                69
 04/05/2025   14:53:42   (  70.12, -47.10) 04/05/2025   14:53:55  (  70.12, -47.17)    2.58                13
 04/05/2025   15:44:25   ( -70.06, 120.31) 04/05/2025   15:43:24  ( -70.07, 120.39)    3.07                61
 04/08/2025   06:19:49   ( -70.22, -98.79) 04/08/2025   06:20:55  ( -70.21, -98.82)    2.29                66
 04/08/2025   07:10:32   (  70.09,  68.73) 04/08/2025   07:10:22  (  70.10,  68.67)    2.01                10
 04/08/2025   08:01:08   ( -69.65,-123.30) 04/08/2025   07:59:57  ( -69.71,-124.23)   36.32                71
 04/10/2025   22:36:40   ( -70.20,  17.03) 04/10/2025   22:37:22  ( -70.20,  17.05)    1.31                42
 04/10/2025   23:27:23   (  70.08,-175.47) 04/10/2025   23:26:49  (  70.08,-175.46)    0.58                34
 04/13/2025   14:03:01   (  70.96, -35.72) 04/13/2025   14:04:08  (  70.85, -33.72)   73.58                67
 04/13/2025   14:53:30   ( -70.15, 132.91) 04/13/2025   14:53:49  ( -70.14, 132.87)    1.50                19
 04/13/2025   15:44:13   (  70.02, -59.60) 04/13/2025   15:43:16  (  70.03, -59.65)    2.24                57