Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 4.  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)
 11/06/2025   07:35:21   (  70.08,  62.51) 11/06/2025   07:35:50  (  70.09,  62.56)    1.83                29
 11/06/2025   08:26:02   ( -69.96,-129.99) 11/06/2025   08:25:20  ( -69.98,-129.96)    2.05                42
 11/08/2025   23:01:37   ( -70.74,   9.96) 11/08/2025   23:02:46  ( -70.61,  11.55)   60.18                69
 11/08/2025   23:52:10   (  70.04, 178.38) 11/08/2025   23:52:21  (  70.06, 178.40)    3.28                11
 11/09/2025   00:42:52   ( -69.96, -14.19) 11/09/2025   00:41:51  ( -69.96, -14.11)    2.99                61
 11/11/2025   15:18:15   ( -70.11, 126.75) 11/11/2025   15:19:25  ( -70.13, 126.72)    2.03                70
 11/11/2025   16:08:59   (  69.99, -65.76) 11/11/2025   16:08:52  (  70.02, -65.79)    2.62                 7
 11/11/2025   16:59:37   ( -69.70, 101.99) 11/11/2025   16:58:24  ( -69.81, 101.55)   20.44                73
 11/14/2025   07:35:04   ( -70.12,-117.47) 11/14/2025   07:35:54  ( -70.12,-117.42)    2.32                50
 11/14/2025   08:25:48   (  70.01,  50.00) 11/14/2025   08:25:21  (  70.00,  50.07)    2.77                27
 11/14/2025   09:16:13   ( -69.03,-141.25) 11/14/2025   09:15:06  ( -69.07,-143.55)   91.75                67
 11/16/2025   23:51:53   ( -70.09,  -1.62) 11/16/2025   23:52:24  ( -70.08,  -1.59)    1.80                31
 11/17/2025   00:42:36   (  69.93, 165.92) 11/17/2025   00:41:51  (  69.96, 165.89)    3.21                45