Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 29.  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)
 06/29/2025   21:46:47   (  70.84,-151.51) 06/29/2025   21:47:55  (  70.70,-149.73)   67.20                68
 06/29/2025   22:37:16   ( -70.10,  17.00) 06/29/2025   22:37:34  ( -70.10,  17.02)    0.68                18
 06/29/2025   23:28:01   (  70.01,-175.56) 06/29/2025   23:27:01  (  70.00,-175.49)    2.88                60
 07/02/2025   14:03:30   (  70.14, -34.62) 07/02/2025   14:04:35  (  70.14, -34.68)    2.37                65
 07/02/2025   14:54:12   ( -70.07, 132.81) 07/02/2025   14:54:04  ( -70.08, 132.87)    3.00                 8
 07/02/2025   15:44:49   (  69.56, -59.13) 07/02/2025   15:43:38  (  69.59, -60.17)   40.33                71
 07/05/2025   06:20:25   (  70.12,  81.17) 07/05/2025   06:21:04  (  70.10,  81.15)    2.06                39
 07/05/2025   07:11:06   ( -69.99,-111.31) 07/05/2025   07:10:34  ( -70.00,-111.36)    2.10                32
 07/07/2025   21:46:48   ( -70.81,  28.54) 07/07/2025   21:47:57  ( -70.72,  30.30)   65.14                69
 07/07/2025   22:37:20   (  70.06,-162.96) 07/07/2025   22:37:34  (  70.06,-163.02)    2.49                14
 07/07/2025   23:28:02   ( -69.97,   4.49) 07/07/2025   23:27:04  ( -69.96,   4.47)    1.47                58
 07/10/2025   14:03:32   ( -70.16, 145.34) 07/10/2025   14:04:36  ( -70.18, 145.38)    2.51                64
 07/10/2025   14:54:16   (  70.04, -47.18) 07/10/2025   14:54:03  (  70.06, -47.14)    2.36                13
 07/10/2025   15:44:51   ( -69.58, 120.83) 07/10/2025   15:43:39  ( -69.63, 119.90)   36.43                72