Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 7 26.  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)
 07/27/2025   22:12:03   ( -70.11,  23.29) 07/27/2025   22:12:58  ( -70.11,  23.24)    2.17                55
 07/27/2025   23:02:47   (  70.01,-169.25) 07/27/2025   23:02:25  (  70.01,-169.27)    0.69                22
 07/27/2025   23:53:15   ( -69.16,  -0.70) 07/27/2025   23:52:07  ( -69.24,  -2.68)   78.74                68
 07/30/2025   14:28:58   ( -70.07, 139.11) 07/30/2025   14:29:28  ( -70.08, 139.07)    1.91                30
 07/30/2025   15:19:42   (  69.98, -53.44) 07/30/2025   15:18:55  (  69.97, -53.44)    0.86                47
 08/02/2025   05:55:13   (  70.31,  87.19) 08/02/2025   05:56:25  (  70.23,  87.55)   16.28                72
 08/02/2025   06:45:52   ( -70.04,-105.07) 08/02/2025   06:45:57  ( -70.02,-105.12)    2.68                 5
 08/02/2025   07:36:36   (  69.95,  62.37) 08/02/2025   07:35:23  (  69.96,  62.44)    2.92                73
 08/04/2025   22:12:04   (  70.08,-156.68) 08/04/2025   22:12:56  (  70.10,-156.76)    3.43                52
 08/04/2025   23:02:47   ( -70.01,  10.74) 08/04/2025   23:02:26  ( -70.00,  10.73)    1.23                21
 08/04/2025   23:53:14   (  69.02, 179.48) 08/04/2025   23:52:08  (  69.05, 177.10)   94.62                66
 08/07/2025   14:28:59   (  70.06, -40.89) 08/07/2025   14:29:25  (  70.05, -40.94)    2.14                26
 08/07/2025   15:19:41   ( -69.93, 126.62) 08/07/2025   15:18:55  ( -69.96, 126.56)    3.44                46