Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 4 26.  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)
 04/26/2025   22:36:22   ( -70.21,  17.08) 04/26/2025   22:37:11  ( -70.23,  17.10)    2.51                49
 04/26/2025   23:27:06   (  70.11,-175.46) 04/26/2025   23:26:38  (  70.13,-175.40)    3.15                28
 04/29/2025   14:02:53   (  71.05, -35.85) 04/29/2025   14:04:00  (  70.93, -33.62)   81.95                67
 04/29/2025   14:53:20   ( -70.15, 132.92) 04/29/2025   14:53:42  ( -70.16, 132.87)    2.08                22
 04/29/2025   15:44:04   (  70.06, -59.62) 04/29/2025   15:43:09  (  70.06, -59.63)    0.51                55
 05/02/2025   06:19:36   (  70.23,  81.24) 05/02/2025   06:20:42  (  70.21,  81.19)    2.75                66
 05/02/2025   07:10:18   ( -70.11,-111.27) 05/02/2025   07:10:12  ( -70.10,-111.34)    2.96                 6
 05/02/2025   08:00:55   (  69.65,  56.75) 05/02/2025   07:59:44  (  69.72,  55.77)   38.43                71
 05/04/2025   22:36:33   (  70.20,-162.96) 05/04/2025   22:37:09  (  70.23,-162.92)    3.12                36
 05/04/2025   23:27:15   ( -70.09,   4.53) 05/04/2025   23:26:40  ( -70.07,   4.48)    3.25                35
 05/07/2025   14:02:55   ( -70.71, 144.68) 05/07/2025   14:04:05  ( -70.59, 145.84)   44.94                70
 05/07/2025   14:53:30   (  70.14, -47.11) 05/07/2025   14:53:38  (  70.15, -47.15)    2.00                 8
 05/07/2025   15:44:12   ( -70.03, 120.38) 05/07/2025   15:43:08  ( -70.04, 120.33)    2.40                64