Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 4 4.  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   ( -70.83, 144.45) 04/05/2025   14:04:19  ( -70.72, 146.06)   60.11                69
 04/05/2025   14:53:41   (  70.12, -47.10) 04/05/2025   14:53:54  (  70.12, -47.17)    2.81                13
 04/05/2025   15:44:24   ( -70.06, 120.31) 04/05/2025   15:43:23  ( -70.06, 120.38)    2.68                61
 04/08/2025   06:19:49   ( -70.23, -98.80) 04/08/2025   06:20:54  ( -70.25, -98.75)    2.72                65
 04/08/2025   07:10:32   (  70.10,  68.72) 04/08/2025   07:10:22  (  70.09,  68.66)    2.35                10
 04/08/2025   08:01:08   ( -69.66,-123.31) 04/08/2025   07:59:57  ( -69.70,-124.24)   36.24                71
 04/10/2025   22:36:39   ( -70.17,  17.09) 04/10/2025   22:37:22  ( -70.18,  17.03)    2.69                43
 04/10/2025   23:27:23   (  70.09,-175.48) 04/10/2025   23:26:49  (  70.07,-175.48)    2.42                34
 04/13/2025   14:03:00   (  70.93, -35.66) 04/13/2025   14:04:08  (  70.83, -33.76)   70.13                68
 04/13/2025   14:53:30   ( -70.17, 132.87) 04/13/2025   14:53:48  ( -70.17, 132.90)    1.19                18
 04/13/2025   15:44:13   (  70.04, -59.63) 04/13/2025   15:43:15  (  70.06, -59.61)    1.61                58
 04/16/2025   06:19:37   (  70.21,  81.28) 04/16/2025   06:20:44  (  70.23,  81.24)    2.10                67
 04/16/2025   07:10:19   ( -70.13,-111.29) 04/16/2025   07:10:13  ( -70.12,-111.28)    1.78                 6
 04/16/2025   08:00:56   (  69.69,  56.68) 04/16/2025   07:59:45  (  69.73,  55.82)   33.50                71