Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 20.  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)
 05/22/2025   05:54:46   ( -70.84, -93.49) 05/22/2025   05:55:55  ( -70.74, -91.85)   61.25                69
 05/22/2025   06:45:19   (  70.13,  74.94) 05/22/2025   06:45:31  (  70.15,  74.93)    2.08                12
 05/22/2025   07:36:01   ( -70.05,-117.62) 05/22/2025   07:35:01  ( -70.03,-117.61)    2.60                60
 05/24/2025   22:11:32   ( -70.22,  23.25) 05/24/2025   22:12:32  ( -70.23,  23.27)    0.81                60
 05/24/2025   23:02:16   (  70.09,-169.24) 05/24/2025   23:01:59  (  70.12,-169.23)    3.59                17
 05/24/2025   23:52:48   ( -69.49,  -1.02) 05/24/2025   23:51:38  ( -69.51,  -2.44)   55.26                70
 05/27/2025   14:28:29   ( -70.19, 139.06) 05/27/2025   14:29:00  ( -70.18, 139.09)    1.40                31
 05/27/2025   15:19:13   (  70.06, -53.43) 05/27/2025   15:18:27  (  70.08, -53.42)    2.11                46
 05/30/2025   05:54:45   (  70.34,  87.26) 05/30/2025   05:55:56  (  70.28,  87.48)   10.78                71
 05/30/2025   06:45:24   ( -70.11,-105.05) 05/30/2025   06:45:27  ( -70.12,-105.12)    2.62                 3
 05/30/2025   07:36:07   (  69.92,  62.54) 05/30/2025   07:34:55  (  69.95,  62.29)    9.77                72
 06/01/2025   22:11:40   (  70.22,-156.78) 06/01/2025   22:12:24  (  70.19,-156.76)    2.90                44
 06/01/2025   23:02:21   ( -70.09,  10.74) 06/01/2025   23:01:54  ( -70.08,  10.72)    0.97                27