Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 25.  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   (  70.07,  74.95) 09/27/2025   06:46:19  (  70.05,  74.88)    3.36                44
 09/27/2025   07:36:17   ( -70.01,-117.63) 09/27/2025   07:35:48  ( -69.99,-117.57)    2.67                29
 09/29/2025   22:12:00   ( -71.06,  21.84) 09/29/2025   22:13:06  ( -70.96,  24.47)   95.88                66
 09/29/2025   23:02:27   (  70.03,-169.21) 09/29/2025   23:02:48  (  70.04,-169.26)    1.87                21
 09/29/2025   23:53:08   ( -69.91,  -1.71) 09/29/2025   23:52:18  ( -69.93,  -1.78)    3.16                50
 10/02/2025   14:28:37   ( -70.24, 138.94) 10/02/2025   14:29:48  ( -70.20, 139.22)   11.48                71
 10/02/2025   15:19:19   (  70.00, -53.38) 10/02/2025   15:19:17  (  69.98, -53.45)    3.55                 2
 10/02/2025   16:10:00   ( -69.89, 114.12) 10/02/2025   16:08:47  ( -69.87, 114.03)    3.38                73
 10/05/2025   06:45:27   ( -70.12,-105.09) 10/05/2025   06:46:17  ( -70.11,-105.03)    3.02                50
 10/05/2025   07:36:11   (  69.99,  62.42) 10/05/2025   07:35:44  (  69.99,  62.46)    1.28                27
 10/05/2025   08:26:36   ( -69.02,-128.86) 10/05/2025   08:25:29  ( -69.06,-131.17)   91.94                67
 10/07/2025   22:11:53   (  71.08,-158.17) 10/07/2025   22:12:58  (  71.00,-155.43)   99.38                65
 10/07/2025   23:02:17   ( -70.07,  10.78) 10/07/2025   23:02:43  ( -70.08,  10.82)    1.76                26
 10/07/2025   23:53:01   (  69.93, 178.29) 10/07/2025   23:52:10  (  69.96, 178.30)    2.92                51