Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 3.  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)
 06/03/2025   06:20:07   (  70.13,  81.24) 06/03/2025   06:20:45  (  70.15,  81.23)    1.78                38
 06/03/2025   07:10:48   ( -70.02,-111.27) 06/03/2025   07:10:15  ( -70.03,-111.30)    1.62                33
 06/05/2025   21:46:29   ( -70.74,  28.73) 06/05/2025   21:47:39  ( -70.63,  30.18)   54.78                70
 06/05/2025   22:37:03   (  70.07,-162.90) 06/05/2025   22:37:14  (  70.09,-162.96)    3.40                11
 06/05/2025   23:27:45   ( -70.01,   4.51) 06/05/2025   23:26:44  ( -69.97,   4.51)    3.66                61
 06/08/2025   14:03:15   ( -70.16, 145.42) 06/08/2025   14:04:15  ( -70.16, 145.39)    1.39                60
 06/08/2025   14:54:00   (  70.06, -47.13) 06/08/2025   14:53:42  (  70.06, -47.12)    0.80                18
 06/08/2025   15:44:31   ( -69.42, 121.14) 06/08/2025   15:43:21  ( -69.45, 119.68)   57.03                70
 06/11/2025   06:20:11   ( -70.10, -98.74) 06/11/2025   06:20:43  ( -70.11, -98.79)    2.23                32
 06/11/2025   07:10:56   (  70.01,  68.71) 06/11/2025   07:10:10  (  70.00,  68.69)    1.62                46
 06/13/2025   21:46:27   (  70.28,-150.57) 06/13/2025   21:47:38  (  70.24,-150.34)    9.78                71
 06/13/2025   22:37:06   ( -70.06,  17.10) 06/13/2025   22:37:09  ( -70.08,  17.06)    2.98                 3
 06/13/2025   23:27:50   (  69.92,-175.38) 06/13/2025   23:26:37  (  69.91,-175.53)    5.62                73
 06/16/2025   14:03:21   (  70.14, -34.59) 06/16/2025   14:04:06  (  70.13, -34.60)    1.36                45
 06/16/2025   14:54:02   ( -70.02, 132.92) 06/16/2025   14:53:36  ( -70.03, 132.88)    1.63                26