Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 30.  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)
 10/02/2025   14:28:37   ( -70.24, 138.94) 10/02/2025   14:29:48  ( -70.20, 139.22)   11.32                71
 10/02/2025   15:19:19   (  70.00, -53.38) 10/02/2025   15:19:17  (  69.99, -53.44)    2.45                 2
 10/02/2025   16:10:00   ( -69.88, 114.12) 10/02/2025   16:08:47  ( -69.88, 114.04)    3.11                73
 10/05/2025   06:45:27   ( -70.12,-105.09) 10/05/2025   06:46:17  ( -70.11,-105.02)    2.62                50
 10/05/2025   07:36:10   (  69.98,  62.43) 10/05/2025   07:35:43  (  70.01,  62.47)    2.93                27
 10/05/2025   08:26:35   ( -69.02,-128.86) 10/05/2025   08:25:28  ( -69.07,-131.16)   91.75                67
 10/07/2025   22:11:53   (  71.07,-158.16) 10/07/2025   22:12:59  (  70.96,-155.49)   97.28                66
 10/07/2025   23:02:17   ( -70.06,  10.79) 10/07/2025   23:02:43  ( -70.09,  10.84)    3.34                26
 10/07/2025   23:53:01   (  69.93, 178.30) 10/07/2025   23:52:11  (  69.92, 178.25)    2.09                50
 10/10/2025   14:28:28   (  70.19, -40.94) 10/10/2025   14:29:39  (  70.18, -40.76)    6.72                71
 10/10/2025   15:19:08   ( -70.02, 126.64) 10/10/2025   15:19:10  ( -70.02, 126.64)    0.43                 2
 10/10/2025   16:09:51   (  69.83, -65.77) 10/10/2025   16:08:38  (  69.85, -65.95)    7.54                73
 10/13/2025   06:45:18   (  70.11,  74.98) 10/13/2025   06:46:06  (  70.08,  74.98)    3.46                48
 10/13/2025   07:35:59   ( -69.99,-117.52) 10/13/2025   07:35:36  ( -69.97,-117.53)    1.80                23