Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 7.  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)
 11/08/2025   23:01:42   ( -70.25,  10.68) 11/08/2025   23:02:53  ( -70.21,  10.96)   11.62                71
 11/08/2025   23:52:24   (  70.00, 178.36) 11/08/2025   23:52:22  (  69.99, 178.30)    2.86                 2
 11/09/2025   00:43:05   ( -69.88, -14.13) 11/09/2025   00:41:52  ( -69.88, -14.22)    3.59                73
 11/11/2025   15:18:41   ( -70.11, 126.64) 11/11/2025   15:19:25  ( -70.09, 126.67)    2.47                44
 11/11/2025   16:09:25   (  69.98, -65.85) 11/11/2025   16:08:52  (  69.98, -65.84)    0.87                33
 11/14/2025   06:45:09   (  70.65,  74.22) 11/14/2025   06:46:18  (  70.54,  75.58)   51.55                69
 11/14/2025   07:35:40   ( -70.04,-117.50) 11/14/2025   07:35:54  ( -70.06,-117.50)    2.29                14
 11/14/2025   08:26:25   (  69.96,  49.92) 11/14/2025   08:25:21  (  69.94,  49.99)    3.09                64
 11/16/2025   23:01:59   (  70.12,-169.19) 11/16/2025   23:02:54  (  70.09,-169.20)    2.90                55
 11/16/2025   23:52:40   ( -69.97,  -1.65) 11/16/2025   23:52:24  ( -69.99,  -1.71)    2.95                16
 11/17/2025   00:43:11   (  69.16, 166.84) 11/17/2025   00:42:03  (  69.21, 164.88)   77.53                68
 11/19/2025   15:18:59   (  70.08, -53.37) 11/19/2025   15:19:23  (  70.05, -53.37)    2.61                24
 11/19/2025   16:09:41   ( -69.98, 114.10) 11/19/2025   16:08:53  ( -69.95, 114.12)    2.69                48