Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 11.  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)
 08/12/2025   22:12:05   ( -70.17,  23.19) 08/12/2025   22:13:08  ( -70.15,  23.27)    3.39                63
 08/12/2025   23:02:48   (  70.03,-169.28) 08/12/2025   23:02:35  (  70.05,-169.23)    3.34                13
 08/12/2025   23:53:23   ( -69.54,  -1.24) 08/12/2025   23:52:12  ( -69.55,  -2.28)   40.40                71
 08/15/2025   14:28:59   ( -70.11, 139.05) 08/15/2025   14:29:39  ( -70.12, 139.11)    2.66                40
 08/15/2025   15:19:42   (  69.97, -53.43) 08/15/2025   15:19:07  (  69.96, -53.47)    1.92                35
 08/18/2025   05:55:22   (  70.81,  86.39) 08/18/2025   05:56:30  (  70.67,  88.17)   67.12                68
 08/18/2025   06:45:52   ( -70.06,-105.10) 08/18/2025   06:46:09  ( -70.07,-105.08)    1.93                17
 08/18/2025   07:36:36   (  69.98,  62.33) 08/18/2025   07:35:36  (  69.96,  62.41)    3.18                60
 08/20/2025   22:12:04   (  70.14,-156.76) 08/20/2025   22:13:09  (  70.16,-156.71)    3.47                65
 08/20/2025   23:02:46   ( -70.01,  10.75) 08/20/2025   23:02:40  ( -70.00,  10.70)    1.92                 6
 08/20/2025   23:53:23   (  69.56, 178.72) 08/20/2025   23:52:12  (  69.62, 177.81)   36.00                71
 08/23/2025   14:28:58   (  70.10, -40.93) 08/23/2025   14:29:40  (  70.07, -40.96)    3.37                42
 08/23/2025   15:19:40   ( -69.97, 126.58) 08/23/2025   15:19:10  ( -69.96, 126.53)    1.95                30