Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 2 16.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 02/16/2025   14:03:28   ( -71.09, 144.03) 02/16/2025   14:04:34  ( -71.00, 146.51)   90.35                66
 02/16/2025   14:53:57   (  70.16, -47.15) 02/16/2025   14:54:15  (  70.13, -47.14)    2.98                18
 02/16/2025   15:44:38   ( -70.05, 120.34) 02/16/2025   15:43:45  ( -70.02, 120.34)    3.40                53
 02/19/2025   06:20:07   ( -70.20, -98.76) 02/19/2025   06:21:15  ( -70.23, -98.76)    2.96                68
 02/19/2025   07:10:52   (  70.11,  68.69) 02/19/2025   07:10:42  (  70.12,  68.73)    2.18                10
 02/19/2025   08:01:28   ( -69.73,-123.42) 02/19/2025   08:00:16  ( -69.79,-124.10)   26.80                72
 02/21/2025   22:37:03   ( -70.16,  17.07) 02/21/2025   22:37:43  ( -70.17,  17.05)    2.15                40
 02/21/2025   23:27:48   (  70.07,-175.49) 02/21/2025   23:27:10  (  70.06,-175.47)    0.84                38
 02/24/2025   14:03:25   (  70.61, -35.21) 02/24/2025   14:04:35  (  70.51, -34.21)   38.93                70
 02/24/2025   14:53:59   ( -70.12, 132.88) 02/24/2025   14:54:10  ( -70.13, 132.87)    0.74                11
 02/24/2025   15:44:44   (  70.04, -59.68) 02/24/2025   15:43:37  (  70.01, -59.65)    3.04                67
 02/27/2025   06:20:13   (  70.18,  81.24) 02/27/2025   06:21:06  (  70.20,  81.23)    2.10                53
 02/27/2025   07:10:55   ( -70.10,-111.33) 02/27/2025   07:10:36  ( -70.09,-111.29)    1.84                19
 02/27/2025   08:01:24   (  69.17,  57.34) 02/27/2025   08:00:17  (  69.20,  55.14)   86.77                67
 03/01/2025   22:37:08   (  70.18,-162.99) 03/01/2025   22:37:30  (  70.17,-162.92)    3.01                22
 03/01/2025   23:27:49   ( -70.04,   4.53) 03/01/2025   23:27:00  ( -70.07,   4.57)    3.20                49