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   23:02:17   ( -70.09,  10.75) 10/07/2025   23:02:52  ( -70.07,  10.78)    2.19                35
 10/07/2025   23:53:01   (  69.95, 178.28) 10/07/2025   23:52:19  (  69.97, 178.28)    2.63                42
 10/10/2025   14:28:37   (  70.69, -41.73) 10/10/2025   14:29:46  (  70.55, -40.29)   55.24                69
 10/10/2025   15:19:08   ( -70.05, 126.60) 10/10/2025   15:19:23  ( -70.06, 126.63)    1.77                15
 10/10/2025   16:09:52   (  69.91, -65.88) 10/10/2025   16:08:51  (  69.90, -65.95)    2.94                61
 10/13/2025   06:45:18   (  70.13,  74.94) 10/13/2025   06:46:24  (  70.11,  74.96)    1.79                66
 10/13/2025   07:35:59   ( -70.02,-117.57) 10/13/2025   07:35:54  ( -70.01,-117.56)    0.74                 5
 10/13/2025   08:26:37   (  69.56,  50.42) 10/13/2025   08:25:26  (  69.62,  49.55)   34.63                71
 10/15/2025   23:02:07   (  70.06,-169.16) 10/15/2025   23:02:53  (  70.08,-169.21)    3.31                46
 10/15/2025   23:52:49   ( -70.00,  -1.75) 10/15/2025   23:52:23  ( -69.98,  -1.72)    1.86                26
 10/18/2025   15:18:58   (  70.05, -53.36) 10/18/2025   15:19:22  (  70.07, -53.34)    2.47                24
 10/18/2025   16:09:39   ( -69.93, 114.14) 10/18/2025   16:08:53  ( -69.92, 114.08)    2.92                46