Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 15.  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)
 08/18/2025   05:55:22   (  70.82,  86.38) 08/18/2025   05:56:30  (  70.68,  88.17)   67.41                68
 08/18/2025   06:45:52   ( -70.06,-105.11) 08/18/2025   06:46:09  ( -70.07,-105.08)    1.39                17
 08/18/2025   07:36:35   (  69.93,  62.41) 08/18/2025   07:35:37  (  69.92,  62.34)    2.94                58
 08/20/2025   22:12:04   (  70.14,-156.77) 08/20/2025   22:13:10  (  70.12,-156.77)    2.01                66
 08/20/2025   23:02:46   ( -70.02,  10.73) 08/20/2025   23:02:40  ( -70.01,  10.71)    1.04                 6
 08/20/2025   23:53:23   (  69.56, 178.72) 08/20/2025   23:52:12  (  69.63, 177.83)   35.47                71
 08/23/2025   14:28:58   (  70.10, -40.93) 08/23/2025   14:29:40  (  70.09, -40.92)    0.49                42
 08/23/2025   15:19:40   ( -69.97, 126.57) 08/23/2025   15:19:10  ( -69.99, 126.56)    1.70                30
 08/26/2025   05:55:23   ( -70.93, -93.80) 08/26/2025   05:56:30  ( -70.87, -91.53)   82.56                67
 08/26/2025   06:45:52   (  70.06,  74.90) 08/26/2025   06:46:10  (  70.05,  74.90)    1.06                18
 08/26/2025   07:36:34   ( -69.94,-117.60) 08/26/2025   07:35:40  ( -69.95,-117.62)    1.44                54
 08/28/2025   22:12:01   ( -70.11,  23.29) 08/28/2025   22:13:12  ( -70.10,  23.21)    2.97                71
 08/28/2025   23:02:45   (  70.03,-169.28) 08/28/2025   23:02:38  (  70.04,-169.23)    2.81                 7
 08/28/2025   23:53:24   ( -69.74,  -1.54) 08/28/2025   23:52:11  ( -69.78,  -1.97)   16.90                73