Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 8.  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)
 06/11/2025   06:20:11   ( -70.11, -98.76) 06/11/2025   06:20:54  ( -70.13, -98.81)    2.70                43
 06/11/2025   07:10:56   (  70.02,  68.70) 06/11/2025   07:10:21  (  70.03,  68.69)    1.22                35
 06/13/2025   21:46:39   (  70.85,-151.49) 06/13/2025   21:47:47  (  70.71,-149.72)   67.08                68
 06/13/2025   22:37:08   ( -70.11,  17.01) 06/13/2025   22:37:26  ( -70.11,  17.04)    0.85                18
 06/13/2025   23:27:53   (  70.02,-175.54) 06/13/2025   23:26:53  (  70.00,-175.47)    2.78                60
 06/16/2025   14:03:22   (  70.17, -34.64) 06/16/2025   14:04:27  (  70.18, -34.63)    0.80                65
 06/16/2025   14:54:03   ( -70.06, 132.86) 06/16/2025   14:53:57  ( -70.08, 132.86)    2.15                 6
 06/16/2025   15:44:41   (  69.59, -59.15) 06/16/2025   15:43:30  (  69.64, -60.11)   37.53                71
 06/19/2025   06:20:18   (  70.13,  81.19) 06/19/2025   06:20:59  (  70.13,  81.17)    0.79                41
 06/19/2025   07:10:59   ( -70.01,-111.30) 06/19/2025   07:10:29  ( -70.03,-111.33)    2.50                30
 06/21/2025   21:46:44   ( -70.95,  28.33) 06/21/2025   21:47:51  ( -70.88,  30.53)   80.45                67
 06/21/2025   22:37:14   (  70.08,-162.97) 06/21/2025   22:37:30  (  70.11,-162.97)    3.08                16
 06/21/2025   23:27:56   ( -70.01,   4.45) 06/21/2025   23:27:00  ( -70.01,   4.53)    2.80                56