Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 26.  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)
 06/27/2025   06:20:21   ( -70.15, -98.85) 06/27/2025   06:21:04  ( -70.14, -98.81)    1.77                43
 06/27/2025   07:11:05   (  70.00,  68.68) 06/27/2025   07:10:31  (  70.03,  68.69)    3.52                34
 06/29/2025   21:46:46   (  70.82,-151.47) 06/29/2025   21:47:54  (  70.73,-149.68)   66.04                68
 06/29/2025   22:37:15   ( -70.07,  17.05) 06/29/2025   22:37:34  ( -70.08,  16.98)    2.69                19
 06/29/2025   23:28:00   (  69.98,-175.52) 06/29/2025   23:27:01  (  69.97,-175.52)    1.03                59
 07/02/2025   14:03:30   (  70.17, -34.66) 07/02/2025   14:04:34  (  70.16, -34.65)    0.81                64
 07/02/2025   14:54:11   ( -70.04, 132.85) 07/02/2025   14:54:04  ( -70.06, 132.84)    2.15                 7
 07/02/2025   15:44:48   (  69.53, -59.09) 07/02/2025   15:43:37  (  69.62, -60.13)   41.30                71
 07/05/2025   06:20:25   (  70.10,  81.21) 07/05/2025   06:21:04  (  70.13,  81.19)    3.35                39
 07/05/2025   07:11:07   ( -70.01,-111.35) 07/05/2025   07:10:34  ( -70.02,-111.33)    1.32                33
 07/07/2025   21:46:49   ( -70.83,  28.50) 07/07/2025   21:47:57  ( -70.74,  30.33)   67.68                68
 07/07/2025   22:37:21   (  70.08,-163.00) 07/07/2025   22:37:34  (  70.08,-163.00)    0.83                13
 07/07/2025   23:28:03   ( -69.99,   4.45) 07/07/2025   23:27:04  ( -69.98,   4.49)    2.56                59