Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 19.  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)
 01/19/2025   14:28:45   ( -70.21, 139.12) 01/19/2025   14:29:45  ( -70.19, 139.15)    3.10                60
 01/19/2025   15:19:29   (  70.09, -53.38) 01/19/2025   15:19:12  (  70.08, -53.35)    1.36                17
 01/19/2025   16:10:00   ( -69.44, 114.90) 01/19/2025   16:08:50  ( -69.53, 113.52)   55.09                70
 01/22/2025   06:45:32   ( -70.17,-105.01) 01/22/2025   06:46:14  ( -70.18,-104.99)    1.48                42
 01/22/2025   07:36:16   (  70.04,  62.48) 01/22/2025   07:35:41  (  70.07,  62.51)    3.03                35
 01/24/2025   22:11:53   (  71.05,-157.96) 01/24/2025   22:13:00  (  70.94,-155.59)   86.37                67
 01/24/2025   23:02:19   ( -70.14,  10.83) 01/24/2025   23:02:43  ( -70.12,  10.82)    1.60                24
 01/24/2025   23:53:03   (  70.01, 178.33) 01/24/2025   23:52:10  (  70.01, 178.31)    0.78                53
 01/27/2025   14:28:27   (  70.35, -41.02) 01/27/2025   14:29:39  (  70.29, -40.68)   13.90                72
 01/27/2025   15:19:06   ( -70.12, 126.66) 01/27/2025   15:19:10  ( -70.13, 126.72)    2.67                 4
 01/27/2025   16:09:50   (  69.99, -65.84) 01/27/2025   16:08:37  (  70.02, -65.80)    3.15                73
 01/30/2025   06:45:10   (  70.18,  75.04) 01/30/2025   06:46:06  (  70.20,  75.07)    1.95                56
 01/30/2025   07:35:51   ( -70.06,-117.45) 01/30/2025   07:35:37  ( -70.04,-117.52)    3.47                14
 01/30/2025   08:26:23   (  69.30,  50.97) 01/30/2025   08:25:14  (  69.37,  49.21)   69.72                69
 02/01/2025   23:01:56   (  70.14,-169.09) 02/01/2025   23:02:32  (  70.17,-169.08)    3.31                36
 02/01/2025   23:52:38   ( -70.07,  -1.66) 02/01/2025   23:52:02  ( -70.07,  -1.59)    2.65                36