Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 3 5.  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)
 03/07/2023   14:53:18   ( -70.15, 132.85) 03/07/2023   14:54:16  ( -70.16, 132.89)    2.01                58
 03/07/2023   15:44:02   (  70.04, -59.67) 03/07/2023   15:43:43  (  70.06, -59.61)    3.44                19
 03/07/2023   16:34:32   ( -69.31, 108.71) 03/07/2023   16:33:23  ( -69.39, 107.11)   63.14                69
 03/10/2023   07:10:11   ( -70.09,-111.29) 03/10/2023   07:10:43  ( -70.11,-111.29)    2.35                32
 03/10/2023   08:00:55   (  69.98,  56.18) 03/10/2023   08:00:10  (  70.01,  56.21)    3.03                45
 03/12/2023   22:36:26   (  70.35,-163.24) 03/12/2023   22:37:37  (  70.30,-162.77)   18.89                71
 03/12/2023   23:27:04   ( -70.04,   4.55) 03/12/2023   23:27:09  ( -70.07,   4.54)    3.09                 5
 03/13/2023   00:17:48   (  69.94, 172.02) 03/13/2023   00:16:36  (  69.96, 172.04)    2.92                72
 03/15/2023   14:53:14   (  70.11, -47.10) 03/15/2023   14:54:04  (  70.10, -47.16)    3.01                50
 03/15/2023   15:43:56   ( -70.01, 120.37) 03/15/2023   15:43:33  ( -70.04, 120.39)    3.30                23
 03/18/2023   06:19:40   ( -71.08,-100.20) 03/18/2023   06:20:46  ( -71.00, -97.56)   95.86                66
 03/18/2023   07:10:07   (  70.10,  68.70) 03/18/2023   07:10:28  (  70.07,  68.70)    2.85                21
 03/18/2023   08:00:49   ( -69.99,-123.83) 03/18/2023   07:59:58  ( -69.96,-123.82)    3.47                51