Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 7.  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)
 03/07/2025   06:20:12   ( -70.21, -98.82) 03/07/2025   06:21:09  ( -70.23, -98.77)    2.61                57
 03/07/2025   07:10:56   (  70.08,  68.69) 03/07/2025   07:10:37  (  70.07,  68.65)    2.04                19
 03/07/2025   08:01:26   ( -69.37,-122.95) 03/07/2025   08:00:17  ( -69.41,-124.62)   65.58                69
 03/09/2025   22:37:06   ( -70.15,  17.04) 03/09/2025   22:37:39  ( -70.15,  17.00)    1.66                33
 03/09/2025   23:27:50   (  70.02,-175.46) 03/09/2025   23:27:06  (  70.04,-175.51)    2.63                44
 03/12/2025   14:03:24   (  70.50, -35.06) 03/12/2025   14:04:34  (  70.42, -34.36)   27.46                70
 03/12/2025   14:54:01   ( -70.15, 132.81) 03/12/2025   14:54:07  ( -70.15, 132.88)    2.68                 6
 03/12/2025   15:44:45   (  70.03, -59.70) 03/12/2025   15:43:34  (  70.04, -59.63)    2.77                71
 03/15/2025   06:20:12   (  70.20,  81.18) 03/15/2025   06:21:04  (  70.23,  81.24)    3.40                52
 03/15/2025   07:10:53   ( -70.06,-111.28) 03/15/2025   07:10:35  ( -70.07,-111.36)    3.28                18
 03/15/2025   08:01:22   (  69.15,  57.35) 03/15/2025   08:00:15  (  69.24,  55.15)   87.37                67
 03/17/2025   22:37:06   (  70.18,-163.02) 03/17/2025   22:37:32  (  70.17,-162.96)    2.40                26
 03/17/2025   23:27:48   ( -70.08,   4.46) 03/17/2025   23:27:02  ( -70.07,   4.52)    2.81                46
 03/20/2025   14:03:19   ( -70.42, 145.07) 03/20/2025   14:04:30  ( -70.36, 145.56)   19.15                71
 03/20/2025   14:53:59   (  70.12, -47.14) 03/20/2025   14:53:59  (  70.13, -47.13)    2.20                 0
 03/20/2025   15:44:41   ( -70.01, 120.34) 03/20/2025   15:43:29  ( -70.03, 120.36)    3.25                72