Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 31.  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)
 03/31/2025   06:20:00   (  70.20,  81.22) 03/31/2025   06:20:57  (  70.18,  81.17)    2.38                57
 03/31/2025   07:10:42   ( -70.09,-111.30) 03/31/2025   07:10:27  ( -70.07,-111.36)    3.13                15
 03/31/2025   08:01:13   (  69.30,  57.16) 03/31/2025   08:00:05  (  69.36,  55.31)   72.89                68
 04/02/2025   22:36:52   (  70.20,-163.00) 04/02/2025   22:37:26  (  70.18,-162.96)    2.16                34
 04/02/2025   23:27:34   ( -70.08,   4.49) 04/02/2025   23:26:56  ( -70.07,   4.51)    1.60                38
 04/05/2025   14:03:09   ( -70.81, 144.49) 04/05/2025   14:04:18  ( -70.74, 146.09)   59.28                69
 04/05/2025   14:53:42   (  70.16, -47.16) 04/05/2025   14:53:54  (  70.14, -47.15)    2.05                12
 04/05/2025   15:44:24   ( -70.04, 120.34) 04/05/2025   15:43:24  ( -70.03, 120.33)    1.03                60
 04/08/2025   06:19:49   ( -70.20, -98.76) 04/08/2025   06:20:55  ( -70.22, -98.80)    2.08                66
 04/08/2025   07:10:33   (  70.13,  68.67) 04/08/2025   07:10:22  (  70.10,  68.69)    2.63                11
 04/08/2025   08:01:09   ( -69.69,-123.35) 04/08/2025   07:59:57  ( -69.72,-124.21)   33.47                72
 04/10/2025   22:36:40   ( -70.18,  17.06) 04/10/2025   22:37:22  ( -70.20,  17.06)    1.40                42
 04/10/2025   23:27:23   (  70.06,-175.44) 04/10/2025   23:26:49  (  70.08,-175.46)    2.81                34
 04/13/2025   14:03:01   (  70.94, -35.68) 04/13/2025   14:04:09  (  70.79, -33.82)   70.07                68
 04/13/2025   14:53:31   ( -70.18, 132.86) 04/13/2025   14:53:48  ( -70.19, 132.93)    3.16                17
 04/13/2025   15:44:14   (  70.06, -59.65) 04/13/2025   15:43:15  (  70.07, -59.59)    2.97                59