Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 26.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 09/27/2025   06:45:35   (  70.06,  74.96) 09/27/2025   06:46:19  (  70.07,  74.90)    2.49                44
 09/27/2025   07:36:17   ( -69.99,-117.61) 09/27/2025   07:35:48  ( -70.01,-117.55)    2.94                29
 09/29/2025   22:12:00   ( -71.04,  21.86) 09/29/2025   22:13:06  ( -70.98,  24.50)   95.85                66
 09/29/2025   23:02:28   (  70.07,-169.27) 09/29/2025   23:02:48  (  70.06,-169.23)    2.19                20
 09/29/2025   23:53:09   ( -69.95,  -1.77) 09/29/2025   23:52:18  ( -69.95,  -1.75)    0.99                51
 10/02/2025   14:28:37   ( -70.23, 138.96) 10/02/2025   14:29:49  ( -70.17, 139.17)   10.36                72
 10/02/2025   15:19:19   (  69.99, -53.36) 10/02/2025   15:19:17  (  70.01, -53.41)    2.86                 2
 10/02/2025   16:10:00   ( -69.87, 114.14) 10/02/2025   16:08:47  ( -69.90, 114.07)    4.11                73
 10/05/2025   06:45:26   ( -70.11,-105.06) 10/05/2025   06:46:17  ( -70.08,-105.06)    2.72                51
 10/05/2025   07:36:10   (  69.97,  62.45) 10/05/2025   07:35:44  (  69.97,  62.42)    1.03                26
 10/05/2025   08:26:35   ( -69.01,-128.84) 10/05/2025   08:25:28  ( -69.09,-131.13)   91.64                67
 10/07/2025   23:02:17   ( -70.05,  10.81) 10/07/2025   23:02:44  ( -70.06,  10.80)    1.76                27
 10/07/2025   23:53:02   (  69.97, 178.24) 10/07/2025   23:52:11  (  69.95, 178.28)    2.50                51
 10/10/2025   14:28:29   (  70.23, -40.99) 10/10/2025   14:29:39  (  70.21, -40.72)   10.40                70
 10/10/2025   15:19:08   ( -70.00, 126.67) 10/10/2025   15:19:11  ( -70.00, 126.61)    2.36                 3
 10/10/2025   16:09:51   (  69.81, -65.74) 10/10/2025   16:08:39  (  69.83, -65.99)    9.62                72