Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 9.  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)
 08/10/2025   05:55:20   ( -70.70, -93.43) 08/10/2025   05:56:29  ( -70.59, -91.95)   55.54                69
 08/10/2025   06:45:53   (  70.04,  74.93) 08/10/2025   06:46:04  (  70.06,  74.91)    2.58                11
 08/10/2025   07:36:36   ( -69.97,-117.66) 08/10/2025   07:35:34  ( -69.95,-117.62)    3.08                62
 08/12/2025   22:12:04   ( -70.11,  23.27) 08/12/2025   22:13:09  ( -70.10,  23.20)    3.21                65
 08/12/2025   23:02:48   (  70.03,-169.29) 08/12/2025   23:02:35  (  70.05,-169.23)    3.35                13
 08/12/2025   23:53:23   ( -69.54,  -1.24) 08/12/2025   23:52:12  ( -69.56,  -2.28)   40.18                71
 08/15/2025   14:28:59   ( -70.11, 139.05) 08/15/2025   14:29:40  ( -70.08, 139.04)    3.42                41
 08/15/2025   15:19:42   (  69.97, -53.44) 08/15/2025   15:19:07  (  69.97, -53.46)    1.16                35
 08/18/2025   05:55:22   (  70.81,  86.38) 08/18/2025   05:56:30  (  70.69,  88.19)   67.67                68
 08/18/2025   06:45:52   ( -70.05,-105.10) 08/18/2025   06:46:10  ( -70.04,-105.14)    2.55                18
 08/18/2025   07:36:35   (  69.92,  62.41) 08/18/2025   07:35:37  (  69.93,  62.36)    2.15                58
 08/20/2025   22:12:04   (  70.14,-156.77) 08/20/2025   22:13:10  (  70.13,-156.75)    0.80                66
 08/20/2025   23:02:46   ( -70.01,  10.75) 08/20/2025   23:02:40  ( -70.03,  10.74)    2.71                 6
 08/20/2025   23:53:23   (  69.56, 178.72) 08/20/2025   23:52:12  (  69.64, 177.84)   35.22                71