Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 4 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)
 04/24/2025   06:19:25   ( -70.43, -99.00) 04/24/2025   06:20:37  ( -70.35, -98.58)   17.65                72
 04/24/2025   07:10:05   (  70.13,  68.77) 04/24/2025   07:10:06  (  70.14,  68.76)    1.32                 1
 04/24/2025   08:00:47   ( -70.02,-123.74) 04/24/2025   07:59:36  ( -70.02,-123.78)    1.37                71
 04/26/2025   22:36:11   ( -70.22,  17.11) 04/26/2025   22:37:04  ( -70.21,  17.10)    1.40                53
 04/26/2025   23:26:54   (  70.09,-175.37) 04/26/2025   23:26:31  (  70.11,-175.40)    2.30                23
 04/27/2025   00:17:22   ( -69.23,  -6.80) 04/27/2025   00:16:14  ( -69.27,  -8.90)   82.77                68
 04/29/2025   14:53:00   ( -70.19, 132.95) 04/29/2025   14:53:28  ( -70.20, 132.98)    1.26                28
 04/29/2025   15:43:43   (  70.06, -59.53) 04/29/2025   15:42:55  (  70.09, -59.53)    3.71                48
 05/02/2025   06:19:09   (  70.39,  81.12) 05/02/2025   06:20:21  (  70.31,  81.41)   13.81                72
 05/02/2025   07:09:49   ( -70.17,-111.22) 05/02/2025   07:09:52  ( -70.15,-111.20)    2.75                 3
 05/02/2025   08:00:32   (  70.03,  56.30) 05/02/2025   07:59:19  (  70.03,  56.29)    0.24                73
 05/04/2025   22:35:54   (  70.22,-162.82) 05/04/2025   22:36:44  (  70.22,-162.82)    0.36                50
 05/04/2025   23:26:36   ( -70.10,   4.67) 05/04/2025   23:26:14  ( -70.11,   4.66)    0.93                22