Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 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)
 07/02/2025   14:03:29   (  70.13, -34.60) 07/02/2025   14:04:34  (  70.15, -34.67)    3.44                65
 07/02/2025   14:54:11   ( -70.06, 132.83) 07/02/2025   14:54:04  ( -70.03, 132.81)    2.53                 7
 07/02/2025   15:44:48   (  69.55, -59.11) 07/02/2025   15:43:37  (  69.60, -60.15)   40.89                71
 07/05/2025   06:20:25   (  70.11,  81.19) 07/05/2025   06:21:04  (  70.11,  81.16)    1.33                39
 07/05/2025   07:11:06   ( -69.98,-111.30) 07/05/2025   07:10:34  ( -70.00,-111.36)    3.08                32
 07/07/2025   21:46:48   ( -70.80,  28.55) 07/07/2025   21:47:57  ( -70.71,  30.28)   64.24                69
 07/07/2025   22:37:21   (  70.10,-163.03) 07/07/2025   22:37:33  (  70.11,-162.96)    2.71                12
 07/07/2025   23:28:02   ( -69.96,   4.50) 07/07/2025   23:27:04  ( -69.95,   4.45)    2.69                58
 07/10/2025   14:03:32   ( -70.16, 145.34) 07/10/2025   14:04:36  ( -70.15, 145.34)    0.87                64
 07/10/2025   14:54:16   (  70.04, -47.17) 07/10/2025   14:54:03  (  70.04, -47.17)    0.58                13
 07/10/2025   15:44:50   ( -69.53, 120.91) 07/10/2025   15:43:39  ( -69.60, 119.86)   41.46                71
 07/13/2025   06:20:26   ( -70.09, -98.80) 07/13/2025   06:21:04  ( -70.12, -98.81)    3.07                38
 07/13/2025   07:11:10   (  69.99,  68.68) 07/13/2025   07:10:31  (  70.01,  68.67)    2.24                39