Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 21.  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)
 01/23/2025   14:03:27   (  70.94, -35.68) 01/23/2025   14:04:35  (  70.82, -33.72)   72.81                68
 01/23/2025   14:53:55   ( -70.14, 132.93) 01/23/2025   14:54:15  ( -70.15, 132.93)    1.82                20
 01/23/2025   15:44:40   (  70.07, -59.65) 01/23/2025   15:43:42  (  70.05, -59.57)    3.46                58
 01/26/2025   06:20:00   (  70.19,  81.33) 01/26/2025   06:21:11  (  70.21,  81.28)    3.17                71
 01/26/2025   07:10:42   ( -70.12,-111.24) 01/26/2025   07:10:41  ( -70.10,-111.25)    2.51                 1
 01/26/2025   08:01:23   (  69.84,  56.49) 01/26/2025   08:00:10  (  69.88,  56.09)   16.31                73
 01/28/2025   22:36:47   (  70.19,-162.87) 01/28/2025   22:37:35  (  70.21,-162.83)    2.91                48
 01/28/2025   23:27:28   ( -70.07,   4.64) 01/28/2025   23:27:05  ( -70.10,   4.65)    3.56                23
 01/31/2025   14:53:32   (  70.15, -47.01) 01/31/2025   14:53:58  (  70.16, -47.00)    0.60                26
 01/31/2025   15:44:13   ( -70.03, 120.50) 01/31/2025   15:43:28  ( -70.05, 120.48)    2.03                45
 02/03/2025   06:19:39   ( -70.52, -99.08) 02/03/2025   06:20:51  ( -70.39, -98.41)   29.12                72
 02/03/2025   07:10:18   (  70.13,  68.82) 02/03/2025   07:10:21  (  70.11,  68.83)    3.12                 3
 02/03/2025   08:00:59   ( -70.01,-123.67) 02/03/2025   07:59:51  ( -70.00,-123.69)    1.59                68