Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 3.  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)
 01/04/2025   21:47:08   (  70.34,-150.63) 01/04/2025   21:48:20  (  70.29,-150.39)   10.43                72
 01/04/2025   22:37:48   ( -70.14,  17.00) 01/04/2025   22:37:51  ( -70.12,  17.00)    1.60                 3
 01/04/2025   23:28:31   (  69.98,-175.45) 01/04/2025   23:27:18  (  70.02,-175.50)    4.57                73
 01/07/2025   14:03:55   (  70.22, -34.66) 01/07/2025   14:04:48  (  70.23, -34.59)    2.57                53
 01/07/2025   14:54:37   ( -70.13, 132.80) 01/07/2025   14:54:18  ( -70.11, 132.88)    3.55                19
 01/07/2025   15:45:06   (  69.23, -58.57) 01/07/2025   15:43:58  (  69.29, -60.61)   80.43                68
 01/10/2025   06:20:42   (  70.19,  81.19) 01/10/2025   06:21:13  (  70.19,  81.25)    2.10                31
 01/10/2025   07:11:24   ( -70.09,-111.35) 01/10/2025   07:10:43  ( -70.08,-111.28)    3.32                41
 01/12/2025   21:46:54   ( -70.69,  28.87) 01/12/2025   21:48:04  ( -70.62,  30.14)   47.29                70
 01/12/2025   22:37:29   (  70.12,-162.91) 01/12/2025   22:37:38  (  70.12,-162.95)    1.40                 9
 01/12/2025   23:28:11   ( -70.03,   4.55) 01/12/2025   23:27:08  ( -70.01,   4.53)    1.55                63
 01/15/2025   14:03:33   ( -70.23, 145.41) 01/15/2025   14:04:34  ( -70.20, 145.43)    3.04                61
 01/15/2025   14:54:16   (  70.07, -47.04) 01/15/2025   14:54:01  (  70.08, -47.09)    2.23                15
 01/15/2025   15:44:49   ( -69.51, 121.11) 01/15/2025   15:43:39  ( -69.54, 119.79)   51.79                70