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   06:19:26   ( -70.44, -99.02) 04/24/2025   06:20:38  ( -70.34, -98.60)   19.03                72
 04/24/2025   07:10:05   (  70.14,  68.75) 04/24/2025   07:10:06  (  70.13,  68.74)    1.77                 1
 04/24/2025   08:00:47   ( -70.03,-123.76) 04/24/2025   07:59:36  ( -70.01,-123.80)    2.61                71
 04/26/2025   22:36:11   ( -70.24,  17.09) 04/26/2025   22:37:03  ( -70.25,  17.16)    2.95                52
 04/26/2025   23:26:54   (  70.10,-175.39) 04/26/2025   23:26:31  (  70.09,-175.43)    1.92                23
 04/27/2025   00:17:21   ( -69.19,  -6.75) 04/27/2025   00:16:14  ( -69.26,  -8.93)   86.28                67
 04/29/2025   14:53:00   ( -70.20, 132.93) 04/29/2025   14:53:28  ( -70.17, 132.94)    3.40                28
 04/29/2025   15:43:43   (  70.07, -59.55) 04/29/2025   15:42:55  (  70.06, -59.57)    0.80                48
 05/02/2025   06:19:09   (  70.40,  81.10) 05/02/2025   06:20:20  (  70.33,  81.44)   14.93                71
 05/02/2025   07:09:49   ( -70.18,-111.24) 05/02/2025   07:09:51  ( -70.17,-111.16)    3.23                 2
 05/02/2025   08:00:31   (  69.99,  56.36) 05/02/2025   07:59:19  (  70.00,  56.24)    4.36                72
 05/04/2025   22:35:55   (  70.23,-162.84) 05/04/2025   22:36:44  (  70.23,-162.80)    1.52                49
 05/04/2025   23:26:36   ( -70.12,   4.65) 05/04/2025   23:26:13  ( -70.12,   4.67)    1.06                23