Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 15.  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)
 11/16/2025   23:01:59   (  70.11,-169.18) 11/16/2025   23:02:52  (  70.09,-169.20)    2.42                53
 11/16/2025   23:52:40   ( -69.97,  -1.65) 11/16/2025   23:52:22  ( -69.98,  -1.72)    2.76                18
 11/17/2025   00:43:09   (  69.04, 167.00) 11/17/2025   00:42:03  (  69.10, 164.74)   90.19                66
 11/19/2025   14:28:32   ( -71.08, 137.69) 11/19/2025   14:29:38  ( -70.94, 140.32)   96.38                66
 11/19/2025   15:18:59   (  70.07, -53.37) 11/19/2025   15:19:19  (  70.07, -53.33)    1.53                20
 11/19/2025   16:09:41   ( -69.98, 114.09) 11/19/2025   16:08:49  ( -69.96, 114.15)    3.15                52
 11/22/2025   06:45:13   ( -70.11,-104.98) 11/22/2025   06:46:18  ( -70.12,-105.01)    1.68                65
 11/22/2025   07:35:57   (  69.99,  62.50) 11/22/2025   07:35:45  (  70.01,  62.48)    1.87                12
 11/22/2025   08:26:32   ( -69.53,-129.49) 11/22/2025   08:25:21  ( -69.57,-130.50)   39.49                71
 11/24/2025   23:02:13   ( -70.09,  10.80) 11/24/2025   23:02:44  ( -70.07,  10.81)    2.56                31
 11/24/2025   23:52:56   (  69.93, 178.35) 11/24/2025   23:52:11  (  69.95, 178.29)    3.36                45
 11/27/2025   14:28:30   (  70.14, -40.84) 11/27/2025   14:29:39  (  70.13, -40.84)    1.90                69
 11/27/2025   15:19:12   ( -70.03, 126.64) 11/27/2025   15:19:09  ( -70.02, 126.64)    1.15                 3
 11/27/2025   16:09:51   (  69.67, -65.50) 11/27/2025   16:08:39  (  69.74, -66.10)   24.63                72