Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 8.  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, -93.42) 08/10/2025   05:56:29  ( -70.60, -91.95)   55.38                69
 08/10/2025   06:45:53   (  70.03,  74.93) 08/10/2025   06:46:04  (  70.06,  74.91)    2.95                11
 08/10/2025   07:36:36   ( -69.97,-117.65) 08/10/2025   07:35:34  ( -69.95,-117.61)    2.46                62
 08/12/2025   22:12:04   ( -70.11,  23.28) 08/12/2025   22:13:09  ( -70.10,  23.21)    2.85                65
 08/12/2025   23:02:48   (  70.03,-169.28) 08/12/2025   23:02:36  (  70.00,-169.30)    3.03                12
 08/12/2025   23:53:23   ( -69.53,  -1.24) 08/12/2025   23:52:12  ( -69.56,  -2.27)   40.26                71
 08/15/2025   14:28:59   ( -70.10, 139.06) 08/15/2025   14:29:40  ( -70.09, 139.06)    1.65                41
 08/15/2025   15:19:42   (  69.97, -53.43) 08/15/2025   15:19:07  (  69.98, -53.45)    1.33                35
 08/18/2025   05:55:22   (  70.80,  86.40) 08/18/2025   05:56:30  (  70.70,  88.21)   67.29                68
 08/18/2025   06:45:52   ( -70.04,-105.08) 08/18/2025   06:46:10  ( -70.05,-105.12)    1.52                18
 08/18/2025   07:36:35   (  69.91,  62.43) 08/18/2025   07:35:37  (  69.94,  62.37)    3.26                58
 08/20/2025   22:12:04   (  70.12,-156.75) 08/20/2025   22:13:10  (  70.15,-156.72)    3.13                66
 08/20/2025   23:02:47   ( -70.04,  10.69) 08/20/2025   23:02:40  ( -70.05,  10.76)    2.84                 7
 08/20/2025   23:53:24   (  69.60, 178.66) 08/20/2025   23:52:12  (  69.66, 177.87)   31.59                72