Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 3 17.  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)
 03/18/2023   07:10:06   (  70.09,  68.70) 03/18/2023   07:10:41  (  70.09,  68.66)    1.75                35
 03/18/2023   08:00:48   ( -70.00,-123.84) 03/18/2023   08:00:10  ( -70.03,-123.79)    3.08                38
 03/20/2023   22:36:24   ( -70.69,  16.23) 03/20/2023   22:37:34  ( -70.55,  17.57)   51.79                70
 03/20/2023   23:26:58   (  70.05,-175.46) 03/20/2023   23:27:08  (  70.06,-175.49)    1.40                10
 03/21/2023   00:17:40   ( -69.96,  -8.01) 03/21/2023   00:16:38  ( -69.95,  -8.02)    1.72                62
 03/23/2023   14:53:05   ( -70.14, 132.88) 03/23/2023   14:54:06  ( -70.16, 132.89)    2.51                61
 03/23/2023   15:43:49   (  70.03, -59.65) 03/23/2023   15:43:33  (  70.05, -59.62)    2.45                16
 03/23/2023   16:34:21   ( -69.41, 108.59) 03/23/2023   16:33:11  ( -69.50, 107.25)   53.00                70
 03/26/2023   07:09:57   ( -70.12,-111.32) 03/26/2023   07:10:32  ( -70.11,-111.29)    1.75                35
 03/26/2023   08:00:41   (  70.02,  56.15) 03/26/2023   07:59:59  (  70.00,  56.19)    2.99                42
 03/28/2023   22:36:12   (  70.49,-163.43) 03/28/2023   22:37:23  (  70.40,-162.61)   31.83                71
 03/28/2023   23:26:48   ( -70.07,   4.54) 03/28/2023   23:26:57  ( -70.08,   4.55)    1.06                 9
 03/29/2023   00:17:32   (  69.97, 172.00) 03/29/2023   00:16:24  (  69.96, 172.03)    1.60                68