Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 1.  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)
 11/03/2025   15:18:32   (  70.11, -53.33) 11/03/2025   15:19:19  (  70.11, -53.28)    1.87                47
 11/03/2025   16:09:13   ( -69.99, 114.17) 11/03/2025   16:08:49  ( -70.01, 114.21)    1.92                24
 11/06/2025   07:35:21   (  70.06,  62.55) 11/06/2025   07:35:51  (  70.06,  62.52)    1.14                30
 11/06/2025   08:26:02   ( -69.93,-129.94) 11/06/2025   08:25:21  ( -69.95,-129.99)    2.95                41
 11/08/2025   23:01:36   ( -70.71,  10.00) 11/08/2025   23:02:45  ( -70.63,  11.59)   59.09                69
 11/08/2025   23:52:09   (  70.01, 178.41) 11/08/2025   23:52:21  (  70.03, 178.36)    2.80                12
 11/09/2025   00:42:51   ( -69.94, -14.15) 11/09/2025   00:41:51  ( -69.93, -14.15)    0.80                60
 11/11/2025   15:18:15   ( -70.15, 126.70) 11/11/2025   15:19:24  ( -70.15, 126.75)    2.01                69
 11/11/2025   16:08:59   (  70.03, -65.82) 11/11/2025   16:08:51  (  70.03, -65.77)    2.02                 8
 11/11/2025   16:59:37   ( -69.74, 101.94) 11/11/2025   16:58:24  ( -69.77, 101.50)   17.37                73
 11/14/2025   07:35:04   ( -70.11,-117.46) 11/14/2025   07:35:54  ( -70.12,-117.41)    1.87                50
 11/14/2025   08:25:48   (  70.01,  50.02) 11/14/2025   08:25:21  (  70.00,  50.07)    2.19                27