Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 22.  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)
 05/23/2025   14:03:04   ( -70.29, 145.26) 05/23/2025   14:04:15  ( -70.27, 145.50)    9.25                71
 05/23/2025   14:53:47   (  70.10, -47.14) 05/23/2025   14:53:43  (  70.11, -47.08)    2.42                 4
 05/23/2025   15:44:27   ( -69.93, 120.45) 05/23/2025   15:43:14  ( -69.94, 120.32)    5.55                73
 05/26/2025   06:19:59   ( -70.15, -98.75) 05/26/2025   06:20:47  ( -70.14, -98.80)    1.93                48
 05/26/2025   07:10:44   (  70.07,  68.68) 05/26/2025   07:10:14  (  70.04,  68.70)    3.13                30
 05/28/2025   21:46:28   (  70.92,-151.56) 05/28/2025   21:47:36  (  70.82,-149.55)   74.25                68
 05/28/2025   22:36:56   ( -70.12,  17.06) 05/28/2025   22:37:17  ( -70.11,  17.03)    1.37                21
 05/28/2025   23:27:40   (  69.98,-175.43) 05/28/2025   23:26:44  (  70.00,-175.47)    2.79                56
 05/31/2025   14:03:11   (  70.16, -34.57) 05/31/2025   14:04:17  (  70.16, -34.64)    2.74                66
 05/31/2025   14:53:53   ( -70.09, 132.86) 05/31/2025   14:53:46  ( -70.11, 132.92)    3.03                 7
 05/31/2025   15:44:30   (  69.58, -59.08) 05/31/2025   15:43:19  (  69.67, -60.05)   38.99                71
 06/03/2025   06:20:07   (  70.14,  81.23) 06/03/2025   06:20:45  (  70.13,  81.21)    0.64                38
 06/03/2025   07:10:48   ( -70.01,-111.26) 06/03/2025   07:10:15  ( -70.03,-111.30)    2.68                33