Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 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)
 06/15/2025   05:54:56   (  70.28,  87.31) 06/15/2025   05:56:07  (  70.25,  87.56)    9.64                71
 06/15/2025   06:45:35   ( -70.07,-105.04) 06/15/2025   06:45:38  ( -70.09,-105.05)    2.44                 3
 06/15/2025   07:36:19   (  69.91,  62.50) 06/15/2025   07:35:06  (  69.93,  62.38)    5.16                73
 06/17/2025   22:11:50   (  70.13,-156.69) 06/17/2025   22:12:40  (  70.16,-156.70)    3.10                50
 06/17/2025   23:02:32   ( -70.07,  10.72) 06/17/2025   23:02:10  ( -70.05,  10.78)    3.06                22
 06/17/2025   23:52:59   (  69.02, 179.55) 06/17/2025   23:51:53  (  69.06, 177.08)   98.39                66
 06/20/2025   14:28:45   (  70.09, -40.87) 06/20/2025   14:29:11  (  70.10, -40.91)    1.78                26
 06/20/2025   15:19:26   ( -69.98, 126.63) 06/20/2025   15:18:41  ( -70.00, 126.58)    3.14                45
 06/23/2025   05:55:01   ( -70.41, -92.90) 06/23/2025   05:56:13  ( -70.30, -92.39)   22.46                72
 06/23/2025   06:45:41   (  70.06,  74.95) 06/23/2025   06:45:42  (  70.08,  74.94)    2.55                 1
 06/23/2025   07:36:23   ( -69.99,-117.63) 06/23/2025   07:35:12  ( -69.98,-117.57)    2.49                71
 06/25/2025   22:11:53   ( -70.16,  23.25) 06/25/2025   22:12:46  ( -70.16,  23.29)    1.57                53
 06/25/2025   23:02:37   (  70.03,-169.24) 06/25/2025   23:02:13  (  70.04,-169.23)    1.68                24