Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 24.  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)
 11/26/2023   15:43:06   ( -69.99, 120.25) 11/26/2023   15:44:01  ( -69.98, 120.31)    2.90                55
 11/26/2023   16:33:49   (  69.83, -72.20) 11/26/2023   16:33:29  (  69.82, -72.27)    2.85                20
 11/26/2023   17:24:18   ( -69.04,  96.25) 11/26/2023   17:23:10  ( -69.10,  94.41)   73.49                68
 11/29/2023   08:00:02   ( -69.93,-123.89) 11/29/2023   08:00:30  ( -69.94,-123.86)    2.26                28
 11/29/2023   08:50:46   (  69.82,  43.58) 11/29/2023   08:49:57  (  69.83,  43.64)    2.94                49
 12/01/2023   23:26:17   (  70.03,-175.60) 12/01/2023   23:27:28  (  70.04,-175.47)    5.00                71
 12/02/2023   00:16:58   ( -69.87,  -8.05) 12/02/2023   00:16:59  ( -69.87,  -8.06)    0.80                 1
 12/02/2023   01:07:40   (  69.66, 159.58) 12/02/2023   01:06:27  (  69.71, 159.35)   10.11                73
 12/04/2023   15:43:11   (  69.94, -59.69) 12/04/2023   15:43:56  (  69.93, -59.73)    1.33                45
 12/04/2023   16:33:53   ( -69.83, 107.78) 12/04/2023   16:33:26  ( -69.83, 107.76)    0.88                27
 12/07/2023   07:09:37   ( -70.74,-112.50) 12/07/2023   07:10:45  ( -70.63,-110.48)   75.47                68
 12/07/2023   08:00:07   (  69.91,  56.12) 12/07/2023   08:00:23  (  69.91,  56.13)    0.40                16
 12/07/2023   08:50:49   ( -69.80,-136.40) 12/07/2023   08:49:53  ( -69.81,-136.38)    1.17                56