Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 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)
 06/24/2025   14:03:25   ( -70.17, 145.36) 06/24/2025   14:04:34  ( -70.14, 145.32)    2.85                69
 06/24/2025   14:54:10   (  70.07, -47.19) 06/24/2025   14:54:01  (  70.04, -47.19)    3.57                 9
 06/24/2025   15:44:46   ( -69.69, 120.70) 06/24/2025   15:43:34  ( -69.77, 120.07)   25.61                72
 06/27/2025   06:20:20   ( -70.13, -98.82) 06/27/2025   06:21:03  ( -70.15, -98.79)    2.56                43
 06/27/2025   07:11:04   (  69.99,  68.70) 06/27/2025   07:10:31  (  69.99,  68.62)    2.86                33
 06/29/2025   21:46:46   (  70.81,-151.45) 06/29/2025   21:47:54  (  70.74,-149.67)   65.65                68
 06/29/2025   22:37:16   ( -70.10,  16.99) 06/29/2025   22:37:34  ( -70.09,  17.00)    1.23                18
 06/29/2025   23:28:00   (  69.97,-175.50) 06/29/2025   23:27:01  (  69.98,-175.51)    1.46                59
 07/02/2025   14:03:30   (  70.15, -34.65) 07/02/2025   14:04:34  (  70.17, -34.63)    2.13                64
 07/02/2025   14:54:12   ( -70.07, 132.79) 07/02/2025   14:54:04  ( -70.07, 132.86)    2.43                 8
 07/02/2025   15:44:48   (  69.52, -59.08) 07/02/2025   15:43:38  (  69.57, -60.19)   43.69                70
 07/05/2025   06:20:26   (  70.14,  81.15) 07/05/2025   06:21:04  (  70.14,  81.20)    2.06                38
 07/05/2025   07:11:07   ( -70.00,-111.32) 07/05/2025   07:10:35  ( -69.99,-111.38)    2.62                32