Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 6.  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)
 10/07/2025   23:02:16   ( -70.05,  10.81) 10/07/2025   23:02:52  ( -70.06,  10.76)    2.21                36
 10/07/2025   23:53:01   (  69.96, 178.26) 10/07/2025   23:52:19  (  69.96, 178.26)    0.22                42
 10/10/2025   14:28:36   (  70.65, -41.66) 10/10/2025   14:29:46  (  70.54, -40.30)   51.55                70
 10/10/2025   15:19:08   ( -70.06, 126.58) 10/10/2025   15:19:23  ( -70.05, 126.62)    2.15                15
 10/10/2025   16:09:52   (  69.92, -65.90) 10/10/2025   16:08:50  (  69.94, -65.89)    2.44                62
 10/13/2025   06:45:17   (  70.09,  75.00) 10/13/2025   06:46:24  (  70.10,  74.94)    2.89                67
 10/13/2025   07:35:59   ( -70.03,-117.59) 10/13/2025   07:35:54  ( -70.00,-117.57)    3.35                 5
 10/13/2025   08:26:37   (  69.57,  50.41) 10/13/2025   08:25:26  (  69.61,  49.54)   34.04                71
 10/15/2025   23:02:08   (  70.07,-169.18) 10/15/2025   23:02:54  (  70.08,-169.22)    1.69                46
 10/15/2025   23:52:49   ( -69.96,  -1.68) 10/15/2025   23:52:24  ( -69.97,  -1.73)    2.63                25
 10/18/2025   15:18:58   (  70.06, -53.37) 10/18/2025   15:19:22  (  70.07, -53.35)    1.16                24
 10/18/2025   16:09:39   ( -69.94, 114.12) 10/18/2025   16:08:52  ( -69.97, 114.15)    2.78                47