Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 2.  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)
 10/05/2025   06:45:26   ( -70.12,-105.08) 10/05/2025   06:46:15  ( -70.12,-105.00)    3.01                49
 10/05/2025   07:36:10   (  69.97,  62.45) 10/05/2025   07:35:43  (  69.96,  62.42)    1.60                27
 10/05/2025   08:26:34   ( -68.96,-128.77) 10/05/2025   08:25:28  ( -69.02,-131.21)   97.43                66
 10/07/2025   22:11:52   (  71.02,-158.07) 10/07/2025   22:12:58  (  70.92,-155.55)   92.11                66
 10/07/2025   23:02:17   ( -70.07,  10.78) 10/07/2025   23:02:42  ( -70.04,  10.78)    2.99                25
 10/07/2025   23:53:01   (  69.93, 178.30) 10/07/2025   23:52:09  (  69.93, 178.27)    1.27                52
 10/10/2025   14:28:26   (  70.10, -40.79) 10/10/2025   14:29:37  (  70.12, -40.84)    3.03                71
 10/10/2025   15:19:08   ( -70.04, 126.62) 10/10/2025   15:19:07  ( -70.01, 126.64)    2.90                 1
 10/10/2025   16:09:49   (  69.74, -65.63) 10/10/2025   16:08:36  (  69.79, -66.03)   16.42                73
 10/13/2025   06:45:16   (  70.08,  75.02) 10/13/2025   06:46:00  (  70.08,  75.01)    0.32                44
 10/13/2025   07:35:57   ( -69.97,-117.48) 10/13/2025   07:35:30  ( -69.98,-117.50)    1.41                27
 10/15/2025   22:11:37   ( -70.95,  22.12) 10/15/2025   22:12:44  ( -70.82,  24.36)   83.07                67
 10/15/2025   23:02:06   (  70.03,-169.11) 10/15/2025   23:02:23  (  70.04,-169.13)    2.03                17
 10/15/2025   23:52:48   ( -69.96,  -1.69) 10/15/2025   23:51:53  ( -69.94,  -1.65)    3.12                55