Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 15.  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)
 11/15/2023   23:26:11   (  70.46,-176.21) 11/15/2023   23:27:21  (  70.36,-175.00)   46.39                70
 11/16/2023   00:16:44   ( -69.89,  -8.01) 11/16/2023   00:16:57  ( -69.91,  -8.00)    3.08                13
 11/16/2023   01:07:28   (  69.77, 159.47) 11/16/2023   01:06:25  (  69.76, 159.43)    2.21                63
 11/18/2023   15:43:00   (  69.99, -59.72) 11/18/2023   15:43:58  (  70.00, -59.65)    3.00                58
 11/18/2023   16:33:41   ( -69.83, 107.83) 11/18/2023   16:33:29  ( -69.83, 107.76)    2.83                12
 11/18/2023   17:24:14   (  69.14, -83.86) 11/18/2023   17:23:05  (  69.23, -85.41)   62.22                69
 11/21/2023   07:59:57   (  69.94,  56.11) 11/21/2023   08:00:29  (  69.94,  56.15)    1.57                32
 11/21/2023   08:50:39   ( -69.84,-136.42) 11/21/2023   08:49:59  ( -69.83,-136.37)    2.21                40
 11/23/2023   23:26:16   ( -70.38,   3.89) 11/23/2023   23:27:27  ( -70.24,   4.80)   37.99                71
 11/24/2023   00:16:53   (  69.91, 171.92) 11/24/2023   00:16:58  (  69.91, 171.98)    2.35                 5
 11/24/2023   01:07:35   ( -69.80, -20.60) 11/24/2023   01:06:28  ( -69.80, -20.53)    2.85                67
 11/26/2023   15:43:06   ( -69.98, 120.26) 11/26/2023   15:44:01  ( -69.96, 120.29)    3.15                55
 11/26/2023   16:33:49   (  69.83, -72.20) 11/26/2023   16:33:28  (  69.84, -72.22)    1.70                21