Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 10.  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)
 01/10/2025   06:20:43   (  70.19,  81.18) 01/10/2025   06:21:23  (  70.17,  81.19)    1.86                40
 01/10/2025   07:11:24   ( -70.05,-111.29) 01/10/2025   07:10:53  ( -70.06,-111.34)    2.10                31
 01/12/2025   22:37:30   (  70.16,-162.97) 01/12/2025   22:37:52  (  70.13,-162.99)    2.64                22
 01/12/2025   23:28:11   ( -70.02,   4.56) 01/12/2025   23:27:22  ( -70.02,   4.48)    2.87                49
 01/15/2025   14:03:39   ( -70.51, 144.97) 01/15/2025   14:04:51  ( -70.38, 145.60)   27.53                72
 01/15/2025   14:54:18   (  70.13, -47.14) 01/15/2025   14:54:21  (  70.11, -47.15)    2.54                 3
 01/15/2025   15:44:59   ( -70.00, 120.39) 01/15/2025   15:43:51  ( -70.00, 120.33)    2.10                68
 01/18/2025   06:20:22   ( -70.23, -98.81) 01/18/2025   06:21:22  ( -70.21, -98.76)    2.86                60
 01/18/2025   07:11:06   (  70.12,  68.67) 01/18/2025   07:10:49  (  70.10,  68.73)    2.77                17
 01/18/2025   08:01:37   ( -69.45,-123.02) 01/18/2025   08:00:27  ( -69.55,-124.40)   54.69                70
 01/20/2025   22:37:09   ( -70.18,  17.07) 01/20/2025   22:37:50  ( -70.17,  17.07)    0.89                41
 01/20/2025   23:27:53   (  70.07,-175.45) 01/20/2025   23:27:17  (  70.06,-175.45)    0.72                36
 01/23/2025   14:03:27   (  70.95, -35.69) 01/23/2025   14:04:35  (  70.85, -33.66)   74.73                68
 01/23/2025   14:53:55   ( -70.13, 132.94) 01/23/2025   14:54:16  ( -70.15, 132.92)    1.37                21
 01/23/2025   15:44:39   (  70.02, -59.58) 01/23/2025   15:43:43  (  70.03, -59.60)    1.22                56