Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 16.  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)
 11/18/2023   15:43:00   (  69.98, -59.70) 11/18/2023   15:43:59  (  69.95, -59.71)    2.77                59
 11/18/2023   16:33:41   ( -69.83, 107.84) 11/18/2023   16:33:29  ( -69.84, 107.77)    3.33                12
 11/18/2023   17:24:15   (  69.18, -83.92) 11/18/2023   17:23:05  (  69.24, -85.40)   58.69                70
 11/21/2023   07:59:57   (  69.93,  56.12) 11/21/2023   08:00:29  (  69.95,  56.16)    2.19                32
 11/21/2023   08:50:39   ( -69.83,-136.41) 11/21/2023   08:49:59  ( -69.84,-136.36)    2.18                40
 11/23/2023   23:26:16   ( -70.37,   3.90) 11/23/2023   23:27:27  ( -70.25,   4.82)   37.29                71
 11/24/2023   00:16:53   (  69.90, 171.93) 11/24/2023   00:16:58  (  69.92, 172.00)    3.00                 5
 11/24/2023   01:07:34   ( -69.74, -20.52) 11/24/2023   01:06:29  ( -69.76, -20.59)    3.34                65
 11/26/2023   15:43:06   ( -69.98, 120.27) 11/26/2023   15:44:01  ( -69.97, 120.31)    1.56                55
 11/26/2023   16:33:50   (  69.88, -72.27) 11/26/2023   16:33:28  (  69.86, -72.21)    3.14                22
 11/26/2023   17:24:18   ( -69.03,  96.27) 11/26/2023   17:23:10  ( -69.09,  94.40)   74.59                68
 11/29/2023   08:00:02   ( -69.91,-123.86) 11/29/2023   08:00:31  ( -69.89,-123.93)    3.52                29
 11/29/2023   08:50:46   (  69.81,  43.60) 11/29/2023   08:49:57  (  69.82,  43.63)    2.37                49