Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 13.  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)
 10/15/2025   23:02:09   (  70.11,-169.24) 10/15/2025   23:02:54  (  70.09,-169.21)    2.95                45
 10/15/2025   23:52:50   ( -70.00,  -1.76) 10/15/2025   23:52:24  ( -69.98,  -1.73)    3.29                26
 10/18/2025   15:18:58   (  70.04, -53.35) 10/18/2025   15:19:23  (  70.04, -53.40)    2.07                25
 10/18/2025   16:09:39   ( -69.94, 114.13) 10/18/2025   16:08:53  ( -69.93, 114.08)    2.03                46
 10/21/2025   06:45:10   ( -70.44,-105.49) 10/21/2025   06:46:21  ( -70.34,-104.72)   30.60                71
 10/21/2025   07:35:49   (  70.04,  62.45) 10/21/2025   07:35:52  (  70.01,  62.45)    3.20                 3
 10/21/2025   08:26:30   ( -69.93,-130.06) 10/21/2025   08:25:22  ( -69.91,-130.06)    2.23                68
 10/23/2025   23:01:55   ( -70.13,  10.80) 10/23/2025   23:02:53  ( -70.13,  10.85)    2.03                58
 10/23/2025   23:52:39   (  69.99, 178.31) 10/23/2025   23:52:20  (  70.01, 178.33)    2.37                19
 10/24/2025   00:43:09   ( -69.29, -13.34) 10/24/2025   00:42:00  ( -69.36, -14.92)   62.46                69
 10/26/2025   15:18:45   ( -70.08, 126.66) 10/26/2025   15:19:21  ( -70.10, 126.70)    2.54                36
 10/26/2025   16:09:29   (  69.95, -65.83) 10/26/2025   16:08:48  (  69.98, -65.82)    3.43                41