Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 4 3.  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)
 04/05/2025   14:03:10   ( -70.84, 144.45) 04/05/2025   14:04:19  ( -70.70, 146.04)   60.12                69
 04/05/2025   14:53:43   (  70.18, -47.19) 04/05/2025   14:53:54  (  70.16, -47.11)    3.17                11
 04/05/2025   15:44:25   ( -70.06, 120.31) 04/05/2025   15:43:24  ( -70.05, 120.36)    2.39                61
 04/08/2025   06:19:49   ( -70.23, -98.80) 04/08/2025   06:20:54  ( -70.23, -98.78)    0.50                65
 04/08/2025   07:10:32   (  70.10,  68.72) 04/08/2025   07:10:21  (  70.12,  68.71)    2.70                11
 04/08/2025   08:01:08   ( -69.66,-123.31) 04/08/2025   07:59:56  ( -69.74,-124.20)   35.16                72
 04/10/2025   22:36:40   ( -70.21,  17.02) 04/10/2025   22:37:21  ( -70.20,  17.06)    2.15                41
 04/10/2025   23:27:23   (  70.08,-175.47) 04/10/2025   23:26:48  (  70.09,-175.45)    0.83                35
 04/13/2025   14:03:00   (  70.91, -35.64) 04/13/2025   14:04:08  (  70.78, -33.83)   67.63                68
 04/13/2025   14:53:30   ( -70.15, 132.89) 04/13/2025   14:53:47  ( -70.17, 132.91)    2.48                17
 04/13/2025   15:44:13   (  70.03, -59.61) 04/13/2025   15:43:14  (  70.06, -59.60)    3.57                59
 04/16/2025   06:19:38   (  70.24,  81.23) 04/16/2025   06:20:43  (  70.21,  81.23)    3.16                65
 04/16/2025   07:10:20   ( -70.11,-111.25) 04/16/2025   07:10:13  ( -70.11,-111.29)    1.59                 7
 04/16/2025   08:00:56   (  69.62,  56.80) 04/16/2025   07:59:45  (  69.71,  55.81)   39.75                71