Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 15.  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)
 01/16/2025   22:12:02   ( -70.42,  22.99) 01/16/2025   22:13:14  ( -70.32,  23.47)   21.10                72
 01/16/2025   23:02:42   (  70.10,-169.19) 01/16/2025   23:02:43  (  70.11,-169.19)    1.43                 1
 01/16/2025   23:53:24   ( -70.02,  -1.75) 01/16/2025   23:52:13  ( -70.00,  -1.71)    2.52                71
 01/19/2025   14:28:45   ( -70.20, 139.13) 01/19/2025   14:29:45  ( -70.21, 139.19)    2.24                60
 01/19/2025   15:19:29   (  70.09, -53.38) 01/19/2025   15:19:12  (  70.11, -53.32)    3.10                17
 01/19/2025   16:10:01   ( -69.48, 114.84) 01/19/2025   16:08:51  ( -69.51, 113.48)   53.07                70
 01/22/2025   06:45:32   ( -70.15,-104.99) 01/22/2025   06:46:15  ( -70.18,-104.98)    3.37                43
 01/22/2025   07:36:17   (  70.08,  62.42) 01/22/2025   07:35:42  (  70.07,  62.50)    3.48                35
 01/24/2025   22:11:55   (  71.13,-158.09) 01/24/2025   22:13:01  (  70.98,-155.54)   93.54                66
 01/24/2025   23:02:20   ( -70.16,  10.80) 01/24/2025   23:02:44  ( -70.17,  10.88)    3.13                24
 01/24/2025   23:53:04   (  70.04, 178.29) 01/24/2025   23:52:11  (  70.05, 178.36)    3.20                53
 01/27/2025   14:28:30   (  70.46, -41.20) 01/27/2025   14:29:40  (  70.38, -40.56)   25.32                70
 01/27/2025   15:19:07   ( -70.12, 126.65) 01/27/2025   15:19:13  ( -70.12, 126.69)    1.50                 6
 01/27/2025   16:09:51   (  70.00, -65.86) 01/27/2025   16:08:40  (  70.00, -65.83)    1.22                71