Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 23.  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)
 11/23/2023   23:26:16   ( -70.37,   3.90) 11/23/2023   23:27:27  ( -70.27,   4.84)   37.05                71
 11/24/2023   00:16:53   (  69.89, 171.95) 11/24/2023   00:16:59  (  69.89, 171.96)    0.40                 6
 11/24/2023   01:07:35   ( -69.79, -20.59) 11/24/2023   01:06:29  ( -69.78, -20.57)    1.78                66
 11/26/2023   15:43:06   ( -69.98, 120.27) 11/26/2023   15:44:01  ( -69.99, 120.32)    2.33                55
 11/26/2023   16:33:49   (  69.82, -72.18) 11/26/2023   16:33:29  (  69.83, -72.25)    3.02                20
 11/26/2023   17:24:19   ( -69.08,  96.19) 11/26/2023   17:23:10  ( -69.11,  94.42)   70.50                69
 11/29/2023   08:00:02   ( -69.91,-123.87) 11/29/2023   08:00:31  ( -69.89,-123.93)    3.42                29
 11/29/2023   08:50:46   (  69.81,  43.59) 11/29/2023   08:49:58  (  69.78,  43.57)    3.25                48
 12/01/2023   23:26:16   (  70.02,-175.59) 12/01/2023   23:27:27  (  70.03,-175.48)    4.23                71
 12/02/2023   00:16:57   ( -69.86,  -8.03) 12/02/2023   00:16:58  ( -69.87,  -8.07)    1.59                 1
 12/02/2023   01:07:39   (  69.65, 159.59) 12/02/2023   01:06:26  (  69.70, 159.34)   10.75                73
 12/04/2023   15:43:11   (  69.93, -59.69) 12/04/2023   15:43:56  (  69.91, -59.75)    3.15                45
 12/04/2023   16:33:53   ( -69.82, 107.79) 12/04/2023   16:33:26  ( -69.81, 107.74)    2.55                27