Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 20.  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)
 01/20/2025   22:37:08   ( -70.16,  17.10) 01/20/2025   22:37:49  ( -70.17,  17.06)    1.84                41
 01/20/2025   23:27:53   (  70.09,-175.48) 01/20/2025   23:27:16  (  70.07,-175.44)    2.80                37
 01/23/2025   14:03:27   (  70.93, -35.66) 01/23/2025   14:04:35  (  70.83, -33.69)   72.35                68
 01/23/2025   14:53:55   ( -70.12, 132.95) 01/23/2025   14:54:16  ( -70.12, 132.88)    2.98                21
 01/23/2025   15:44:39   (  70.00, -59.55) 01/23/2025   15:43:43  (  70.01, -59.63)    3.15                56
 01/26/2025   06:20:01   (  70.23,  81.27) 01/26/2025   06:21:11  (  70.24,  81.31)    1.75                70
 01/26/2025   07:10:42   ( -70.10,-111.22) 01/26/2025   07:10:41  ( -70.12,-111.22)    2.22                 1
 01/26/2025   08:01:23   (  69.82,  56.52) 01/26/2025   08:00:10  (  69.90,  56.12)   17.93                73
 01/28/2025   22:36:46   (  70.17,-162.83) 01/28/2025   22:37:35  (  70.19,-162.86)    2.70                49
 01/28/2025   23:27:28   ( -70.10,   4.59) 01/28/2025   23:27:05  ( -70.08,   4.62)    2.10                23
 01/31/2025   14:53:33   (  70.18, -47.05) 01/31/2025   14:53:59  (  70.15, -47.01)    3.14                26
 01/31/2025   15:44:14   ( -70.05, 120.46) 01/31/2025   15:43:29  ( -70.04, 120.47)    1.18                45