Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 21.  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)
 11/22/2025   06:45:14   ( -70.13,-105.02) 11/22/2025   06:46:19  ( -70.12,-105.02)    1.14                65
 11/22/2025   07:35:58   (  70.01,  62.47) 11/22/2025   07:35:46  (  70.02,  62.48)    0.61                12
 11/22/2025   08:26:33   ( -69.55,-129.52) 11/22/2025   08:25:22  ( -69.57,-130.50)   38.05                71
 11/24/2025   23:02:13   ( -70.05,  10.87) 11/24/2025   23:02:46  ( -70.07,  10.80)    3.46                33
 11/24/2025   23:52:58   (  69.98, 178.27) 11/24/2025   23:52:13  (  69.96, 178.29)    3.09                45
 11/27/2025   14:28:30   (  70.13, -40.82) 11/27/2025   14:29:41  (  70.15, -40.82)    2.96                71
 11/27/2025   15:19:12   ( -70.02, 126.66) 11/27/2025   15:19:11  ( -70.04, 126.66)    2.69                 1
 11/27/2025   16:09:53   (  69.75, -65.63) 11/27/2025   16:08:40  (  69.82, -66.00)   16.14                73
 11/30/2025   06:45:30   (  70.11,  74.95) 11/30/2025   06:46:07  (  70.10,  75.01)    2.35                37
 11/30/2025   07:36:12   ( -70.00,-117.56) 11/30/2025   07:35:37  ( -69.99,-117.51)    1.72                35
 12/02/2025   22:11:51   ( -70.46,  22.86) 12/02/2025   22:13:02  ( -70.36,  23.63)   30.92                71
 12/02/2025   23:02:29   (  70.05,-169.20) 12/02/2025   23:02:33  (  70.02,-169.20)    3.17                 4
 12/02/2025   23:53:11   ( -69.93,  -1.70) 12/02/2025   23:52:03  ( -69.92,  -1.72)    1.69                68