Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 25.  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)
 05/27/2025   14:28:29   ( -70.21, 139.04) 05/27/2025   14:29:01  ( -70.18, 139.09)    3.03                32
 05/27/2025   15:19:13   (  70.07, -53.44) 05/27/2025   15:18:28  (  70.09, -53.41)    2.73                45
 05/30/2025   05:54:47   (  70.40,  87.17) 05/30/2025   05:55:58  (  70.34,  87.56)   15.87                71
 05/30/2025   06:45:25   ( -70.12,-105.07) 05/30/2025   06:45:30  ( -70.11,-105.13)    2.46                 5
 05/30/2025   07:36:10   (  70.03,  62.37) 05/30/2025   07:34:57  (  70.01,  62.37)    2.32                73
 06/01/2025   22:11:40   (  70.22,-156.78) 06/01/2025   22:12:27  (  70.20,-156.77)    2.38                47
 06/01/2025   23:02:21   ( -70.10,  10.73) 06/01/2025   23:01:57  ( -70.08,  10.70)    1.82                24
 06/04/2025   13:38:08   ( -71.12, 150.21) 06/04/2025   13:39:14  ( -71.01, 152.69)   90.20                66
 06/04/2025   14:28:36   (  70.14, -40.90) 06/04/2025   14:28:55  (  70.14, -40.96)    2.34                19
 06/04/2025   15:19:18   ( -70.07, 126.52) 06/04/2025   15:18:24  ( -70.09, 126.59)    3.01                54
 06/07/2025   05:54:49   ( -70.26, -92.63) 06/07/2025   05:55:55  ( -70.24, -92.59)    3.22                66
 06/07/2025   06:45:33   (  70.13,  74.89) 06/07/2025   06:45:22  (  70.13,  74.90)    0.64                11
 06/07/2025   07:36:08   ( -69.69,-117.13) 06/07/2025   07:34:57  ( -69.75,-118.00)   34.06                71