Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 12.  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   22:12:04   ( -70.15,  23.22) 08/12/2025   22:13:08  ( -70.11,  23.22)    3.57                64
 08/12/2025   23:02:47   (  70.01,-169.26) 08/12/2025   23:02:35  (  70.02,-169.28)    1.15                12
 08/12/2025   23:53:22   ( -69.52,  -1.22) 08/12/2025   23:52:11  ( -69.57,  -2.26)   40.83                71
 08/15/2025   14:28:58   ( -70.09, 139.08) 08/15/2025   14:29:39  ( -70.09, 139.06)    0.83                41
 08/15/2025   15:19:42   (  70.01, -53.48) 08/15/2025   15:19:06  (  69.98, -53.44)    2.86                36
 08/18/2025   05:55:22   (  70.79,  86.42) 08/18/2025   05:56:30  (  70.70,  88.20)   66.18                68
 08/18/2025   06:45:52   ( -70.04,-105.07) 08/18/2025   06:46:10  ( -70.04,-105.13)    2.38                18
 08/18/2025   07:36:36   (  69.96,  62.37) 08/18/2025   07:35:37  (  69.93,  62.37)    2.53                59
 08/20/2025   22:12:04   (  70.11,-156.73) 08/20/2025   22:13:10  (  70.13,-156.75)    1.95                66
 08/20/2025   23:02:47   ( -70.04,  10.70) 08/20/2025   23:02:40  ( -70.03,  10.73)    2.09                 7
 08/20/2025   23:53:24   (  69.59, 178.68) 08/20/2025   23:52:12  (  69.64, 177.84)   32.84                72
 08/23/2025   14:28:57   (  70.07, -40.89) 08/23/2025   14:29:39  (  70.09, -40.92)    2.64                42
 08/23/2025   15:19:40   ( -70.00, 126.54) 08/23/2025   15:19:09  ( -69.99, 126.57)    1.30                31